Recently there was a pregnant woman in Pacifica, Calfiornia that was killed by her Pit Bull. Seems she was a member of a group that is trying to change the public perception of Pit Bulls as being vicious animals.
If she was still alive she could rethink her position.
One woman brought her 1 1/2 year old deaf pitt bull. Her reason for doing it was not to cheer up the sick and in firmed but to make people like and not fear pitt bulls.
When she entered the room, late, I heard her dog growl at the other occupants. Not a good candidate for a therapy dog, IMHO. I don't think she and her dog passed on to the next level, me and mine did. :)