My vet told me that they slow way down at about 6-8months. however, they do grow more muscle, and there bones aren't completely done until they are 18months. I think every yorkie is different. I have one that was 6lbs when she was your puppy age and now she weighs 101/2 lbs@ 11mo. She hasn't grown since she was about 8months. She doesn't have an once of fat on her. she's all legs. Very tall and a bigger face,nose,eyes,teeth,ears everything. My other one is almost 7months, she hasn't grown hardly at all since she was about 16wks, @ 3.2lbs. She has gained
weight, but not
height, she is very short. She weighs 6lbs. which my vet said
she's was a big yorkie!! Not compared to my other one. lol... You can she the size difference if you go to my profile page. I love them either way! However, there is a big difference compared from 6lbs to 101/2lbs. Neither one of mine are
petite But I love
them both so much!!