Since I got Cash - about two years ago - I have wanted to get another yorkie. But I put off getting another one because I read somewhere that you should only get a second one if the first one would be a good example for the baby.
And honestly, I think that it could be a bit difficult for you because you just got Buddy and now another baby... But that is just my opinion.
Cash was very hyper when he was younger and I wouldn't have been able to handle him and another one, but I think it depends on the dog and on you.
Good luck either way, Keri!! And good luck Buddy
