Guides
How dogs age, explained
Short, plain-English reads on dog aging — no jargon, no fear.
Dog life stages explained
Puppy, adolescent, adult, senior — the four life stages of a dog and what each one needs.
How to tell a dog's age
Adopted a dog with no birth date? Here is how to estimate a dog's age from its teeth, coat, eyes, and energy.
The multiply-by-seven myth, explained
One dog year does not equal seven human years. Here is where the myth came from and what is actually true.
When is a dog a senior?
There is no single senior age for dogs — it depends on size. Here is when your dog crosses into its senior years.
Why do small dogs live longer than big dogs?
Small dogs often outlive big dogs by years. Here is the simple reason why, and what it means for your dog.