DogOrbis · Daily life

When does a dog stop being a puppy?

Dogs do not all mature at the same age. Small dogs generally finish growing earlier, while large and giant breeds may keep developing until 18–24 months.

Quick answer

Dogs do not all mature at the same age. Small dogs generally finish growing earlier, while large and giant breeds may keep developing until 18–24 months.

What to know

Turning one year old is a useful reference point, but it does not mean every dog has completed physical or behavioural development. Adult size, genetics and breed influence the end of growth and adolescence.