Oh where to start with this...
Pit bulls at top of fatal attacks
20-year study finds kids under 14 suffer 42% of bite injuries — 3 of 4 involve family pet
Attacks by pit bulls accounted for about a third of the 238 fatal dog attacks in the United States during a 20-year study, according to the federal Centers for Disease Control and Prevention.
http://www.sfgate.com/cgi-bin/article.cgi?f=/c/a/2005/06/23/MNGRODDH561.DTL