Talk about ferocious dogs and pit bulls are one of the top breeds that come to mind. The pit bulls have their origins in the United States and weigh between 30-55 lbs.
This breed is the result of interbreeding between a breed of bulldogs and terriers. The result is a pit bull terrier that has the athleticism and strength of the bulldog and gameness of a terrier.
The pit bulls are known to lock their jaws and maul their prey till the prey is dead.
Though the locking has been proven a myth, it still has one of the most ferocious bites. Most times these dogs were bred for dog fighting.
Though these dogs are bred as normal pets nowadays, they are still a breed you need to watch out for.