More than 86% of fatal dog attacks are done by this kind of dog:

[ozone_man]

20. And 59% of fatal dog attacks are done by this kind of dog:

http://www.dogbite-expert.com/statistics-usfatal-2006-2008.htm

Percentage of all Deaths

Pit bull 52 59% Rottweiler 12 14% American bulldog 4 5% Husky 4 5% German shepherd 3 3% Doberman pinscher 2 2% Chow chow 2 2% Wolf-hybrid 2 2% Labrador 2 2% Australian shepherd 1 1% Golden retriever 1 1% Boxer 1 1% Bullmastiff 1 1% Great pyrenees 1 1% Mixed breed (undetermined) 1 1% Jack Russell terrier 1 1% Old English sheepdog 1 1% Mastiff 1 1% Presa canario 1 1% Total 93 104%

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Now if you have an un-neutered, male pit bull, well that is just asking for trouble.