The History: I have a 4 month old doberman pup, which I got from one of my uncles farmhouse. Now the thing bout the pup is, his dads a pure dobie but his moms a mixture of GSD & Doberman (90% Doberman + 10% GSD). Thats about his genes. Now the problem I'm facing is that Zach (my dobie) has kind...

I don't really know when this started happening - maybe 2 months ago - but it's getting progressively worse. Petey is a 4-yr old Chihuahua; I just had him to the vet for a check-up, and she said that health-wise, he was fine. He gets a walk every day and is fed good food and gets regular attention...