The fact of the matter is, while bulldogs are often willing to test their mettle against other animals, the majority live their lives in peace with many kinds of other animals. There is nothing about a pit bull which makes it "more" aggressive to other animals than any other breed. Almost any sporting, hound or terrier breed you can think of was developed for one thing - to kill other animals. Dogs are wonderfully adept at understanding which animals are "fair game" and which are companions.