Pet age blog
Plain-English guides to dog and cat age in human years, life stages and feeding. Every figure here is checked against the same sources as the dog age calculator — the AKC size chart, the UCSD study and AAHA/WSAVA guidance.
8 November 2026
How much should I feed my dog? The RER × MER chart by weight
A 10 kg neutered adult dog needs about 630 kcal a day; a 20 kg dog about 1,059. The vet RER × MER formula, a feeding chart by weight, cups and grams, treats and the body-condition check.
7 November 2026
How old is my cat in human years? The AAHA 15-9-4 chart, explained
A 1-year-old cat is about 15 in human years, a 2-year-old about 24 — then it's 4 a year. The AAHA/AAFP chart, the 15-9-4 rule and the life stages vets plan care around.
6 November 2026
How old is my dog in human years? The AKC chart and the UCSD formula, explained
A 1-year-old dog is about 15 in human years, a 2-year-old about 24 — and after that it depends on size. The AKC size chart and the UCSD DNA formula side by side, why they disagree, and which number to use for your dog.