Cat Care Tips And Agression. Another thing that would lead to your cat’s aggression is his or her deep need to control their territory. When your cat is the only pet in the house and a strange animal enters their territory, they feel threatened. No one will take away their couch, their bowl, or their place on your lap. Your cat will fight for those things with their teeth and claws. Also, consider how your cat reacts to a strange child. Usually, children are safe, but sometimes a strange, fast-moving child can cause the cat to be frustrated, angry or scared and this may lead to aggressive behavior. So So can I learn how to care for a cat? There is no solid answer, but the thing you can know for sure is that cats and dogs are both different. When you are dealing with a cat, you are dealing with a different personality. Cats are much more finicky than dogs, so you need to approach things differently.