It's probably just his age. Puppies can be so annoying to older dogs. I remember when I first brought my yorkie home at 8 wks he would bark and bark at my chihuahua. If he got close to her she would growl at him and he'd keep barking. It wasn't much fun for a couple of months. That was a couple of years ago and they get along great now. They are always playing kissy face with each other. |