My dear Hubby got me a pug puppy two days ago and Casper is having a fit. He is hissing and growling at me, my hubby, his sister who just got back from vet (she got spayed) and our other dog Annie (who for some rein he think is his mom.). And he hind from the puppy and ask like he is afraid of him. His sister Sasha is very dominance (will hiss, growl and bite) and is very aggressive to other kitties and dogs. And she likes the new puppy. Casper is very sweet to my nieceâ€[emoji]8482[/emoji]s kitties when they come vist. He is being very mean to his sister and he never been mean to her. He bite and hiss at her when she come home of vet and did like he did not know her. Any info on why is he asking like this and info helpful hints on how to get him to like the puppy.