A Breed-Specific Almanac

How old is your pet really?

Breed-aware age, weight, and feeding calculators for dogs, cats, rabbits, hamsters, turtles, and parrots — built on veterinary formulas, not the seven-year myth.

Calculate my pet's age→Browse 159 breeds

The Core Calculators

Two companions, two formulas.

01 · Dog

Dog Age Calculator

Breed & size-aware conversion based on the 2019 UCSD epigenetic clock study — accurate for toy to giant dogs.

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02 · Cat

Cat Age Calculator

AAHA / AAFP feline life-stage guidelines, from kitten through geriatric senior.

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01 · Dogs

Popular dog breeds

02 · Cats

Popular cat breeds

03 · Rabbits

Popular rabbit breeds

04 · Hamsters

Popular hamster breeds

05 · Turtles

Popular turtle breeds

06 · Parrots

Popular parrot breeds

Written for the long-lived

A quieter calculator. A deeper reference.

Explore the almanac→