I know how scary it is to not know what is wrong with your puppy. I am dealing with a pretty serious situation with my Abby. I find it a tiny bit less scary if you at least know a little about what to expect from a sick puppy or at least what other symptoms to look for. I would definitely do some research on yorkie sites about most common diseases and keep my eyes peeled for anything abnormal. A biggie for me was coccidia since Abby got it one week after we got her and I hear it can be pretty common. It sounds scary but it is treatable. I really hope it is nothing other than him being a little scared or stressed. Keeping him and you in my prayers.
