Yes. Exactly. I once had someone ask me “How long do Labs stay puppies?” The dog was only just two years old. She was a bit surprised when I told her “Not very soon.”
I also was amused when someone would tell me “I want to get a Jack Russel because we live in an apartment and they are small dogs.” I was told this more than once. I just smiled and nodded sagely.
Better build a racetrack on the walls for even an adult Jack Russell, lol.