My Chihuahua doesn't like the new puppy. He's been being aggressive, please help!
I was trying to get the pup to go to the bathroom and she kept bounding all over the place, especially on me, but my boy didn't seem to like that at all. He was suddenly very aggressive and made many sharp movements as if he was going to bite the little pup ( he didn't).
Is he jealous? afraid I like the pup more? or is he just trying to be protective?