Pet age in human years
Non-linear conversion: UCSD epigenetic clock formula for dogs, AVMA table for cats
Animal
≈ human years
Life stage
59
Senior
Dogs: 16·ln(age)+31 per UCSD 2020 (DNA methylation) + size correction — large breeds age faster. Cats: 1 yr ≈ 15, 2 yrs ≈ 24, then +4/yr (AVMA).