38 of the World's Most Dangerous Dog Breeds You Need to Know

2. Pit Bull

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Pit bulls combine terrier drive with bulldog power. Rising popularity has coincided with increased reported attacks, though neglect and abuse are major factors. Historically used in fighting, many have suffered chaining, isolation, or mistreatment. With structured enrichment these intelligent, athletic dogs can be affectionate and playful. Advocates note that chronic neglect helps explain why this breed appears so often in severe incident data.