It all depends on the dogs.. I am not sure about Yorkies, but my family has Lhasa's, Poodles and Chiahuahua's and all of them put on weight and calmed down alot after being spayed and neutered..Except the Lhasa, his personality never really changed although he started peeing on his own leg and stinks all the time now. I haven't neutered Tucker yet.. Hope you get some good advice... |