response: Oh is that so?  I know that besides being used as family companions, they have been used in the US as catch dogs for hogs and semi-wild cattle.  They've also been used to drive livestock!
original_response: I'm not certain that i would own one as a pet, but they have been used in the modern era as farm dogs to drive cattle or other livestock.
history: Pit bulls are great dogs, but quite often they are misunderstood. Oh are they?  I know they are a kind of dog. Pit bulls are a descendant of bulldogs! Maybe that's where the ''bull'' comes from. What do you think? I have no clue.  Originally, they were developed as dogs for fighting.  They cross bred bull-baiting dogs and terriers. They do sometimes serve as search and rescue and police dogs, so they do have a purpose. I have friends that own them and they are wonderful pets if trained correctly.
knowledge: After the use of dogs in blood sports was banned, such dogs were used as catch dogs in the United States for semi-wild cattle and hogs, to hunt and drive livestock, and as family companions.