1. Pit Bull
Banned by many countries in the world, pit bulls are one of the most dangerous breeds of dogs in the world. In order to prevent aggressive outbursts, they are required to undergo several extensive and training exercises. Here’s a harrowing report for you! “A study released in 1991 found that 94% of the attacks on children by pit bulls were unprovoked.” You might need to think twice before adopting a pit bull as a pet companion.