Pit bulls are popular with owners who see them as a symbol of status or machismo (here's a BBC report on this).
And the breed has now been banned in many places, including Brooklyn and Harlem, New York.
Perhaps with good reason.
Pit bulls are responsible for the greatest number of fatal dog attacks in the U.S.
Ironically, these attacks most often occur on the owner's property.
Hence the satirical headline that appeared in The Onion: 'Heroic Pit Bull Journeys 2,000 Miles to Attack Owner'.
Thanks to Tattoo Elvis for the photo