38 World's Most Dangerous Dog Breeds You Must Be Aware Of

2. Pit Bull

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This breed combines the energy and agility of a terrier with the strength and build of a bulldog. Some experts think the increase in pit bull attacks is due to the breed’s rising popularity. Pit bulls were bred for fighting and are often mistreated or restrained. With the right care, though, this smart breed can be social and playful. PETA has commented on fatal pit bull incidents, noting that pit bulls often suffer ongoing abuse and neglect. This may explain why this breed is often involved in serious injuries or deaths.