Pitbull Terrier

The American Pit Bull Terrier (APBT) is a medium-sized, solidly built, short haired dog whose early ancestors came from England and Ireland. It is a member of the molosser breed group. Being intelligent, athletic dogs, American Pit Bull Terriers excel in many dog sports, including weight pulling, dog agility, flyball, lure coursing, and advanced obedience competition. Some APBTs have been known to do well in schutzhund as well. Out of the 66 dogs who have earned UKC "superdog" status (by gaining championship titles in conformation, obedience, agility, and weightpull), 23 have been American Pit Bull Terriers, and another 13 were American Staffordshire Terriers. The American Pit Bull Terrier is a working dog, and is suitable for a wide range of working disciplines due to their intelligence, high energy, and endurance. In the United States they have been used as search and rescue dogs, police dogs performing narcotics and explosives detection, Border Patrol dogs,hearing dogs to provide services to the deaf, as well as general service dogs

Deadly Rating 6/10 Almost deadly

Reference
Wikipedia