Pet Age Calculator — Dog & Cat Years in Human Years

Convert your pet's age into human years using veterinary life-stage data, not the ×7 myth. Dogs by size class, cats, horses and five small pets, in both directions.

Deze rekenmachine is nog niet vertaald naar het Nederlands.

Zolang de vertaling nog niet klaar is, tonen we de versie in het Engels.

Animal

Size (adult weight)

Years

years

Months

months

More options

Adult weight (optional)

Human-equivalent age

Mature adult

39 years

Actual age: 5 yearsBecomes Senior at 8 years

Epigenetic clock (2020)

57 years

DNA methylation, 104 Labradors, UCSD

How the methods compare

Method	Human-equivalent age
Vet consensus (size-adjusted) AAHA canine life-stage guidelines and the AAHA/AAFP age chart	39 years
Epigenetic clock (2020) DNA methylation, 104 Labradors, UCSD	57 years
Old ×7 rule Outdated — not supported by veterinary science	35 years

Life stages

Puppy

Young adult

Mature adult

Senior

Puppy

Young adult

Mature adult

Senior

Typical life expectancy

11–14 years

UK median 12.5 years (McMillan et al., 2024 — 584,734 dogs)

Both figures come from UK veterinary cohorts.

Life stages are general guidance. Your vet is the one who can tell you what your animal needs.

Full Dog age chart

Pet age	Small	Medium	Large	Giant
1	15	15	15	15
2	24	24	24	24
3	28	29	30	31
4	32	34	36	38
5	36	39	42	45
6	40	44	48	52
7	44	49	54	59
8	48	54	60	66
9	52	59	66	73
10	56	64	72	80
11	60	69	78	87
12	64	74	84	94
13	68	79	90	101
14	72	84	96	108
15	76	89	102	115
16	80	94	108	122
17	84	99	114	129
18	88	104	120	136
19	92	109	126	143
20	96	114	132	150
…
25	116	139	162	185
30	136	164	192	220

Calculate your own exact age

How long have you had your pet?

Bijgewerkt: 30 juli 2026

Pet age calculator. Dog, cat and small-pet ages in human years.

A pet age calculator converts your animal's age into the equivalent human age, using the life-stage charts vets work from instead of the seven-year rule. It covers dogs by size class, cats, horses, rabbits and other small pets, runs in both directions, and names the life stage each result falls in.

What Is a Pet's Age in Human Years?

A pet's age in human years is the human age that sits at the same point in the life course — the stage a vet would compare it to. A one-year-old dog or cat has stopped growing and can already breed, which is roughly where a 15-year-old human is, so the AAHA/AAFP age chart puts the first birthday at 15 human years and the second at 24. Six months reads 10.

After the second birthday the two species part ways. A cat adds about 4 human years per calendar year for the rest of its life. A dog adds 4, 5, 6 or 7 depending on adult body weight, because body size drives both how fast a dog ages and how long it lives. The spread is wide: on a tenth birthday a small dog reads 56 human years, a medium 64, a large 72 and a giant 80. A Chihuahua and a Great Dane born on the same day are 24 human years apart at ten.

Front-loading is what kills the multiply-by-a-constant shortcut. A puppy compresses infancy, childhood and adolescence into twelve months, then spends the rest of its life on a shallow slope. The seven-year rule gets that shape wrong at both ends — far too slow in the first year, and blind to the fact that a Great Dane at seven is much nearer the end of its life than a Chihuahua at seven. Its origin looks like arithmetic rather than biology: people lived to about 70, dogs to about 10, and somebody divided.

Life stage is the part of the answer that changes what an owner does. The 2019 AAHA Canine Life Stage Guidelines and the 2021 AAHA/AAFP Feline Life Stage Guidelines exist to trigger care decisions at the boundaries — senior screening, diet changes, joint support, dental work. The canine document defines senior as the last quarter of a dog's estimated lifespan rather than a fixed birthday; the feline one sets fixed bands instead, with mature adult running from 7 to 10 years and senior over 10. That is why this calculator prints a life stage next to every number and shows the age the next stage begins.

The same logic reaches past dogs and cats, with different amounts of evidence behind it. Horses have a chart created by equine veterinarians in 2003 that pet-health sites still reproduce. Rabbits, guinea pigs, ferrets, hamsters and budgies have no veterinary chart at all, so this calculator states the model it uses rather than presenting an unsourced table as fact.

How to Use the Pet Age Calculator

Pick the animal, tell it how big your dog is, and type an age. The result updates as you type; there is no button to press.

1. Choose the animal. Dog and cat come first because they carry most of the questions, followed by rabbit, horse, hamster, guinea pig, ferret and budgie.

2. For a dog, pick the size class by adult weight: small up to 20 lb, medium 21 to 50 lb, large 51 to 100 lb, giant over 100 lb. If the class is a guess, open More options and type the adult weight instead — the calculator picks the class and tells you which one it chose.

3. Enter the age as years plus months, or flip the toggle to Date of birth and pick the day. Months matter under two years old, where the curve is steepest: a 6-month puppy reads 10 human years and a 9-month puppy 12.5.

4. Read the headline number and the life-stage chip beneath it. The stage bar shows where your animal sits across its whole life course, along with the age the next stage starts.

5. Compare the methods. For dogs the table lists the size-adjusted veterinary number, the 2020 epigenetic clock and the old seven-year rule side by side, each with a line on what it is based on.

6. Open the full chart at the bottom to look up any age without touching the age field; switch the animal at the top to see another species' chart.

Two other directions sit behind the selector at the top. Human → pet age takes your own age and runs the same curve backwards. Pet ↔ pet lines two species up on the shared human scale and reports the matching life stage, with a note on the result explaining that the figure comes from pivoting through human years.

If you know the day you brought your pet home rather than its birthday, work out the elapsed time with the date duration calculator first, then add it to the age it was at adoption.

Dog Age Chart: Dog Years to Human Years by Size

Dog age	Small (to 20 lb)	Medium (21-50 lb)	Large (51-100 lb)	Giant (over 100 lb)
6 months	10	10	10	10
1 year	15	15	15	15
2 years	24	24	24	24
3 years	28	29	30	31
4 years	32	34	36	38
5 years	36	39	42	45
6 years	40	44	48	52
7 years	44	49	54	59
8 years	48	54	60	66
10 years	56	64	72	80
12 years	64	74	84	94
15 years	76	89	102	115
18 years	88	104	120	136
20 years	96	114	132	150

The Formula for Each Species

H = 24 + \Delta (a - 2)

$H$ = Human-equivalent age, in years
$a$ = The animal's age, in years (fractions allowed)
$\Delta$ = Human years added per dog year after age 2: 4 small, 5 medium, 6 large, 7 giant
$M$ = Age at sexual maturity, used by the small-pet model
$L$ = Typical pet lifespan, used by the small-pet model

Every method here is a piecewise-linear function of age, which is what lets the calculator run it backwards for the reverse direction and read it across for the cross-species comparison.

Dogs follow four segments, with the slope after the second birthday set by the size class:

H = 20a \quad (0 \le a \le 0.5)

H = 10 + 10(a - 0.5) \quad (0.5 < a \le 1)

H = 15 + 9(a - 1) \quad (1 < a \le 2)

H = 24 + \Delta(a - 2) \quad (a > 2)

The two anchors — 6 months at 10 human years, 12 months at 15 — come from the AAHA/AAFP age chart, and the size slope runs 4, 5, 6, 7 from small to giant.

Cats share the first year and take one extra step through the second, because the published feline chart is more granular there:

H = 15 + 12(a - 1) \quad (1 < a \le 1.5)

H = 21 + 6(a - 1.5) \quad (1.5 < a \le 2)

H = 24 + 4(a - 2) \quad (a > 2)

Horses use the 2003 horse/human age relationship chart created by equine veterinarians, steep to age three and shallow after:

H = 6.5a \quad (0 \le a \le 2)

H = 13 + 5(a - 2) \quad (2 < a \le 3)

H = 18 + 2.5(a - 3) \quad (a > 3)

For rabbit, guinea pig, ferret, hamster and budgie there is no published chart, so a disclosed model does the work. Two husbandry figures per species anchor it: the age at sexual maturity maps to human 13, and the typical pet lifespan maps to human 80. Both figures for all five species are cited at the foot of the page.

H = \frac{13}{M}a \quad (a \le M)

H = 13 + \frac{67}{L - M}(a - M) \quad (a > M)

A rabbit matures at 0.42 years and typically lives 10, so its post-maturity slope is 6.99 human years per rabbit year, which is why a 3-year-old rabbit reads 31. A hamster matures at 0.13 years against a 2.5-year lifespan, giving a slope of 28.27 — the steepest of the eight species, which is why the hamster chart steps in half-years where the dog and cat charts step in whole ones.

The dog result also carries the 2020 epigenetic clock, the one method here that is not piecewise-linear:

H = 16 \ln(a) + 31

The logarithm makes it diverge from the veterinary chart most at the young end. At one year it returns 31 against the chart's 15. At five years, 56.8 against 39. The two curves meet just past eleven years, where both read 69 for a medium dog, and the chart pulls ahead from there: at twelve the clock returns 70.8 against the chart's 74.

One display note accounts for most apparent mismatches between these figures and the screen. The headline keeps one decimal for an animal under two years old and rounds to whole human years from two years up, and the method table and the conversion chart always round to whole years. So the epigenetic figure for a five-year-old dog shows as 57 rather than 56.8, and a 22-year-old horse shows as 66 rather than 65.5.

Worked Pet Age Examples

A Five-Year-Old Medium Dog: Three Methods, Three Numbers

A 5-year-old dog weighing 30 lb sits in the medium class, and the size-adjusted veterinary chart puts it at 39 human years: 15 for the first year, 9 more for the second, then 5 for each of the three years after. The life stage reads Mature adult, and the panel shows a typical life expectancy of 11 to 14 years for that size.

Beside the headline number, the method table shows the 2020 epigenetic clock at 57 and the old seven-year rule at 35. Those three figures span 22 human years for one dog on one birthday.

One Birthday, Four Answers: Chihuahua to Great Dane

Take four dogs on their tenth birthday. The small one (up to 20 lb) reads 56 human years, the medium 64, the large 72 and the giant 80.

The life stages pull further apart than the numbers do. The small dog has just entered senior, the medium crossed at 8, the large at 7 and the giant at 6, so the Great Dane has been a senior for four years on the day the Chihuahua becomes one. Typical life expectancy moves the same way, from 12 to 16 years for the small class down to 7 to 10 for the giant class. At five years old the gap is still modest (36, 39, 42 and 45); at fifteen it is 39 human years wide (76, 89, 102 and 115).

A Cat at 10, 15 and 25

A cat's curve has one step a dog's does not: 15 human years at 12 months, 21 at 18 months, then 24 at the second birthday. From there it adds 4 a year for life.

A 10-year-old cat is 56 human years and still a mature adult, because the feline guidelines place senior at over 10 rather than at 10. A 15-year-old reads 76 and a 20-year-old 96. Above 21 cat years the calculator marks the result as extrapolated, because 21 is the top of the range the published feline chart covers; a 25-year-old cat still reads 116, which is what carrying the +4 slope that far gives arithmetically.

Working Backwards: How Old Would You Be as a Dog?

Switch to Human → pet age and the same curves run in reverse. A 30-year-old maps to a medium dog of 3.2 years, which is three years and about two months. A 40-year-old maps to 5.2 years and a 65-year-old to 10.2 years, already senior for that size class. The reverse direction prints a single decimal at two years and above, and years plus months below it.

Children land in puppy territory fast. A 10-year-old human maps to a 6-month puppy and a 5-year-old to a 3-month one, because every human-equivalent year up to 10 fits inside a dog's first half-year. Change the species to cat and a 30-year-old becomes a cat of 3.5 years.

Small Pets and Horses on the Same Scale

The five small-pet species and the horse each have their own curve, and lining them up shows how differently one calendar year lands. A 3-year-old rabbit reads 31 human years, a 3-year-old ferret 39, a 3-year-old budgie 35 and a 4-year-old guinea pig 57. A 2-year-old hamster reads 66, because a hamster fits an entire life into about two and a half years. A 22-year-old horse reads 66 on screen; the 2003 horse/human age relationship chart the equine curve follows puts that horse at 65.5, and the headline rounds to whole human years from two years up.

Senior onsets sit at three quarters of the typical lifespan in each case: 7.5 years for a rabbit, 6 for a budgie, just over 5 for a ferret, 4.5 for a guinea pig, and before the second birthday for a hamster. For rabbits that lands close to the outside figure — bunnylady.com's rabbit-age guide calls a rabbit elderly by 8 years, where this model turns it senior at 7.5.

Comparing a Dog and a Cat in the Same House

The third direction lines two animals up on the shared human scale. A 5-year-old medium dog sits at 39 human years; reading 39 back onto the cat curve gives a cat of 5.8 years, so the two are at roughly the same point in life. An 8-year-old large dog reads 60, which maps to an 11-year-old cat — the dog is a senior and so is the cat.

The pivot works because the AAHA/AAFP reference poster already prints dogs and cats on one shared human-year axis. No published study converts ages directly between species, and the calculator says so on the result rather than in a footnote.

What a Human-Equivalent Age Does Not Tell You

A human-equivalent age is a life-stage map. It does not measure health, fitness or how much time an animal has left. It answers one question: how far through its life course is my pet.

The calculator shows a typical life-expectancy range with no subtraction and no countdown, and that is deliberate. A range describes a population; the animal on your lap is one member of it, and half of any population lives past the median. When a pet is already older than the range for its size class, the panel reports that as a fact about the range rather than a verdict on the animal.

The two figures behind those ranges come from UK cohorts. McMillan and colleagues (2024) followed 584,734 dogs across 155 breeds and crossbreeds and found a median life expectancy of 12.5 years overall: 12.7 years for the pure-breed subset of 473,681 dogs and 12.0 for crossbreeds. Teng and colleagues (2024) built life tables from 7,936 recorded cat deaths and reported 11.74 years at age zero, with a 95% confidence interval of 11.61 to 11.87. Neutering rates, indoor-outdoor habits and veterinary access differ between countries, so read both as the best available reference rather than a local number.

Variation inside those medians is wide. In the dog cohort, skull shape mattered too: medium flat-faced breeds had the shortest medians in the cohort, 9.1 years for males and 9.6 for females, against 13.3 for small long-nosed females. Female dogs outlived males, 12.7 against 12.4. In cats the sex gap was larger, 12.51 against 11.18, and breed mattered too, with Burmese and Birman cats at 14.42 and 14.39 years. None of that changes the aging curve the calculator draws, and none of it is captured by a single number.

The epigenetic clock is peer-reviewed inside a narrow scope. Wang and colleagues fitted 16 × ln(age) + 31 to DNA methylation in 104 dogs, predominantly Labrador Retrievers, aged from about a month old to 16 years. Because the cohort was one mid-large breed, the formula carries no size adjustment, and its authors note that breeds with widely different lifespans could produce a different translation. It is also undefined at zero and returns −10 at four weeks, which is why the calculator hides it below three months and flags it as extrapolated above 16 years.

Rabbit, guinea pig, ferret, hamster and budgie have no veterinary human-equivalence chart. Rather than copy an uncited table, the calculator states its own model: age at sexual maturity maps to human 13, typical pet lifespan maps to human 80, and everything between is a straight line. That is a disclosed assumption, not a measurement, and the result labels it as a model.

Values between published landmarks are linear interpolation. The feline chart publishes 6, 12, 18 and 24 months; the canine chart publishes 6, 12 and 24. A 7-month reading sits on the line between two of those points rather than on a measured one.

Common Mistakes When Converting Pet Age

Multiplying by seven. The rule fails hardest at both ends. It puts a one-year-old dog at 7 human years where the veterinary chart says 15, and a twelve-year-old giant breed at 84 where the chart says 94. This calculator keeps the seven-year figure visible as a labelled comparison row so you can see the size of the error, never as the headline.
Using a dog chart for a cat, or the reverse, after age two. The two species share the first two years exactly, then split. A cat adds 4 human years per year while a medium dog adds 5, so by fifteen the cat reads 76 and the medium dog 89 — a 13-year gap from one wrong dropdown.
Leaving the dog on the default size class. Medium is the default because it is the most common, and it is wrong for a large share of dogs. On a tenth birthday the four classes read 56, 64, 72 and 80, so a bad guess costs up to 24 human years and moves the senior boundary by four calendar years.
Reading the human-equivalent age as time remaining. A 12-year-old medium dog reading 74 human years is not six years short of 80. The conversion places a life stage and makes no prediction about an individual animal, which is why nothing on this page subtracts anything from anything.
Comparing two calculators that use different methods. A five-year-old dog reads 39 on the size-adjusted veterinary chart and about 57 on the 2020 epigenetic clock. Neither is a typo. Check which method a tool uses before deciding that one of them is broken.
Treating mature adult as senior. The AAHA and AAFP guidelines separate the two on purpose: mature adult is the middle of life, and senior means the last quarter of estimated lifespan for a dog or anything over 10 years for a cat. A 5-year-old medium dog and a 9-year-old cat are both mature adults, and the care conversation at each stage is different.
Rolling months into years by hand. The months field stops at 11 and never carries over, so a dog of 1 year and 11 months stays there instead of jumping to 2 years, and its reading stays just under the 24 human years that a second birthday brings.

Tips for Reading Your Pet's Result

Put the senior boundary in the diary. When your dog crosses into senior — 10, 8, 7 or 6 years depending on size, and over 10 for a cat — book a wellness visit and ask for baseline bloodwork. Starting that conversation is what the life-stage guidelines were written for.
Use the months field under two years old. That is where the curve is steepest. Three months reads 5 human years, six months 10, nine months 12.5 and twelve months 15, so rounding a puppy to "about a year" can move the answer by 10 human years.
Type the adult weight when the size class is a coin flip. A 22 lb terrier and a 19 lb terrier fall either side of the small-to-medium line, and the class changes every later year by one human year. Open More options, enter the adult weight, and the calculator names the class it picked.
Read all three dog methods before repeating a number. The size-adjusted chart is the headline because it is the one your vet works from and the only one that reacts to size. The epigenetic figure diverges most at the young end: a one-year-old dog reads 31 there against the chart's 15.
If your animal is past the typical range, read the range as a median. Half of every population sits on the far side of it. The panel switches to saying the animal is past the typical span for its size, and it never subtracts anything, because a population median says nothing about one animal's remaining time.
Compare two pets in the same household with the third direction. A 5-year-old medium dog and a cat of 5.8 years are at about the same place in life. That direction is the only one that puts two different animals on a single footing.
Share the link rather than a screenshot. The direction, species, size and age all travel in the URL, so whoever opens it sees the same result and can change the age themselves. For your own age in years, months and days, the age calculator handles the human side.

Frequently Asked Questions About Pet Age in Human Years

How old is a 10-year-old dog in human years?

A ten-year-old dog is 56 human years if it is small (up to 20 lb), 64 if medium, 72 if large and 80 if giant. Adult body weight is the whole difference: the same birthday puts a Chihuahua in its mid-fifties and a Great Dane in its eighties.

Is one dog year really seven human years?

No. A one-year-old dog is closer to 15 human years than to 7, because dogs finish growing and reach sexual maturity within their first year. The rule comes from dividing a 70-year human lifespan by a 10-year dog lifespan, and it gets the shape of the curve wrong.

How old is my cat in human years at 15?

A 15-year-old cat is 76 human years. The feline curve reaches 15 human years at the first birthday, 21 at eighteen months and 24 at the second birthday, then adds 4 a year: 3 cat years is 28, 8 is 48, 12 is 64, 16 is 80, 18 is 88 and 20 is 96. Anything above 21 cat years is marked as extrapolated, since that is where the published feline chart stops; carrying the +4 slope on to 25 gives 116.

How do I convert human years to dog years?

Switch the calculator to Human → pet age and enter your own age. The conversion runs the same curve backwards, so a 30-year-old comes out as a medium dog of 3.2 years and a 40-year-old as 5.2 years. A 5-year-old child maps to a 3-month puppy, because every human-equivalent year up to 10 fits inside a dog's first six months. Small dogs come out older than giant dogs for the same human age, since they age more slowly after two.

Why does another pet age calculator give a different number?

Because the field runs on at least three different methods. A tool built only on the 2020 epigenetic clock, as gigacalculator.com is, puts a five-year-old dog at about 57 human years, while the size-adjusted veterinary chart puts the same medium dog at 39. onlineconversion.com uses a third rule entirely — 10.5 human-equivalent years for each of the first two years, then 4 a year after, credited to an unnamed canine expert — and ignores size. This calculator shows the size-adjusted figure as the headline, the epigenetic figure beside it and the seven-year figure labelled as outdated, so you can see all three instead of trusting one.

Do dogs and cats age at the same rate?

For the first two years, close enough: both reach about 15 human years at their first birthday and 24 at their second. After that a cat adds 4 human years per year, the same slope as a small dog, while medium, large and giant dogs add 5, 6 and 7. By ten years old the cat and the small dog both read 56, the large dog 72 and the giant dog 80.

When does a dog become a senior?

This calculator treats senior as 10 years for a small dog, 8 for a medium dog, 7 for a large dog and 6 for a giant dog. Those ages are the veterinary field's working version of the definition in the 2019 AAHA Canine Life Stage Guidelines: the last 25% of estimated lifespan through end of life. The guidelines themselves decline to publish fixed ages, stating that estimates of inclusive ages are not uniform and are therefore not proposed for the mature adult and senior stages. Treat the boundary as a prompt to ask your vet, not a birthday.

Is a 10-year-old cat a senior?

Not yet. The 2021 AAHA/AAFP feline guidelines put mature adult at 7 to 10 years and senior at over 10, so a cat on its tenth birthday is still a mature adult. This calculator follows that wording and switches to senior the month after.

How old is my hamster or rabbit in human years, and why do the charts disagree?

No veterinary body publishes a human-equivalence chart for small mammals, so every tool builds its own. This one maps two cited numbers per species — age at sexual maturity onto human 13, typical pet lifespan onto human 80 — which puts a one-year-old hamster at 37.6 human years and a two-year-old at 66. Omnicalculator's hamster table gives 58 and 70 for the same two ages with no citation of any kind. For rabbits, bunnylady.com's chart (20 human years at the first birthday, then 6 a year, and no cited source of its own) gives 32 at three years where this model gives 31, so the two land within a year of each other.

How old is my horse in human years?

A horse reaches about 6.5 human years at one, 13 at two and 18 at three, then adds 2.5 a year. The 2003 horse/human age relationship chart these figures follow, created by equine veterinarians, puts a 22-year-old horse at 65.5 human years — its own worked example — and a 40-year-old at 110.5. The calculator rounds the headline to whole years from two years up, so those two show as 66 and 111. It turns a horse senior at 15 and shows a typical span of 25 to 30 years beside the number.

Is this pet age calculator free, and how accurate is it?

It runs in your browser at no cost and needs nothing but a species and an age. The arithmetic is exact, and every constant traces to a source listed at the foot of the page: veterinary guidelines and peer-reviewed life tables for dogs and cats, a published chart for horses, and husbandry references for the maturity and lifespan figures the five small-pet curves are built from. A second kind of accuracy is separate: the conversion places your animal on the life-stage scale that veterinary guidelines define, and no conversion measures an individual animal's health. Two dogs of the same breed and age can be in visibly different shape.

How accurate is the 16 × ln(age) + 31 dog formula?

It is peer-reviewed and it is narrow. Wang and colleagues fitted it in 2020 to DNA methylation in 104 dogs, predominantly Labrador Retrievers, aged from about a month old to 16 years. Because the cohort was one mid-large breed, the formula carries no size adjustment, so it returns the same 57 human years for a five-year-old Chihuahua and a five-year-old Great Dane. It is also undefined at age zero and returns −10 at four weeks, which is why this calculator hides it below three months and flags it above 16 years.

My dog just crossed into the senior stage. What should I do?

Book a wellness visit and ask about senior screening: bloodwork, urinalysis and blood pressure. Raise joint support, a dental check and a diet review at the same appointment. The stage boundary is a scheduling prompt rather than a diagnosis, and plenty of dogs cross it with nothing wrong.

My pet is older than the typical life-expectancy range. What does that mean?

That the range is built from a median, and half of any population sits beyond it. The panel shows a typical span for the size class — 11 to 14 years for a medium dog, 12 to 16 for a cat — with no subtraction and no countdown, because a range describes a population rather than the animal in front of you. Passing the upper bound means your pet is one of the ones living longer than most.

Can I enter a date of birth instead of an age?

Yes. Flip the age field to Date of birth and pick the day; a second field under More options lets you take the age as of any date instead of today. Owners of adopted animals who only know an approximate age can stay on years plus months, which is the default. For the elapsed time since an adoption day, the date duration calculator is the better fit.

Bronnen en referenties

Inhoud gecontroleerd door het team van Smart Calculators

Pet age	Small	Medium	Large	Giant
1	15	15	15	15
2	24	24	24	24
3	28	29	30	31
4	32	34	36	38
5	36	39	42	45
6	40	44	48	52
7	44	49	54	59
8	48	54	60	66
9	52	59	66	73
10	56	64	72	80
11	60	69	78	87
12	64	74	84	94
13	68	79	90	101
14	72	84	96	108
15	76	89	102	115
16	80	94	108	122
17	84	99	114	129
18	88	104	120	136
19	92	109	126	143
20	96	114	132	150
…
25	116	139	162	185
30	136	164	192	220

Pet age	Small	Medium	Large	Giant
1	15	15	15	15
2	24	24	24	24
3	28	29	30	31
4	32	34	36	38
5	36	39	42	45
6	40	44	48	52
7	44	49	54	59
8	48	54	60	66
9	52	59	66	73
10	56	64	72	80
11	60	69	78	87
12	64	74	84	94
13	68	79	90	101
14	72	84	96	108
15	76	89	102	115
16	80	94	108	122
17	84	99	114	129
18	88	104	120	136
19	92	109	126	143
20	96	114	132	150
…
25	116	139	162	185
30	136	164	192	220

Pet age	Small	Medium	Large	Giant
1	15	15	15	15
2	24	24	24	24
3	28	29	30	31
4	32	34	36	38
5	36	39	42	45
6	40	44	48	52
7	44	49	54	59
8	48	54	60	66
9	52	59	66	73
10	56	64	72	80
11	60	69	78	87
12	64	74	84	94
13	68	79	90	101
14	72	84	96	108
15	76	89	102	115
16	80	94	108	122
17	84	99	114	129
18	88	104	120	136
19	92	109	126	143
20	96	114	132	150
…
25	116	139	162	185
30	136	164	192	220