Growing up so fast

Good afternoon guys, quick question:

When do they stop being puppies?

I was advised that they are no longer puppies as soon as they are 1 year old, but Leo is definitely still a puppy in my opinion. He is still quite slender and still has a 'puppy face'. Dont get me wrong, I love him being a puppy, was just wondering when I can expect him to start looking more like an actual adult Staffie

Officially (if you're showing a dog) they stop being puppies at 12 months old. But it depends what you mean by puppy.

All breeds are different, but a staff doesn't really become fully adult until he/she's about 3 years old! Even then, some will act adult at 2 years old, some never!

This very much depends on the dog in question, and can vary.

Usually a dog is mature when it reaches 3-4 years old, they would start to show adult behaviour at about 3 years old then reaching full maturity at about 4 years of age. Hope this answers your question.

my boy 21 months old and he still puppyish i can see him filling out a little every month

Skye is 20 months old and is looking like an adult staff and has lost alot of her puppy looks but not her puppy behavior