Why does my cat get so jealous of other cats?

Miranda asked:

I have two cats. My girl hates the boy and hisses at him constantly. And she is always fighting with the cat upstairs. I have heard of cats who are friendly and cuddle with each other but I have never had a cat like that. Is my cat just a b*tch? She is very friendly with me.

Frontline Flea Tick

CatLovingCare.com