Amber Harney writes:
It is in the APBTs nature to go after other animals. That is what they’ve been bred to do for centuries. But, not everyone is the same. Many Pit Bull owners live peacefully with more than one dog, cats, etc. If your Pit Bull was raised around other animals it is more likely to be friendly with them. This is not true in all cases and some owners have the “crate and rotate.” In which, owners have only one dog out at a time.

Patch O’ Pits writes:
That depends on the individual dog. It can not be made as a blanket statement. Some do well with other dogs and some will not tolerate them. It is always best to be on the side of caution with any breed of dog in my opinion and make sure to do good solid obedience training, know your dogs comfort levels and learn its body language and posturing. Some can certainly have dog aggression.

I wanted to add, that human aggression is not to be tolerated from this breed. APBTs are supposed to be bred to LOVE people and not be fearful shy or aggressive towards them. Dog aggression does NOT = human aggression as some seem to believe. The two are very different things.