4. PIT BULL
Pit Bulls were designed and created for fighting purposes only! The perfect fighter is surely built strong, fast, and packed with muscles! They have so much power that if a Pit Bull jumped on you with their full force, you can surely assume you have been hit by a cannonball and managed to survive! Meanwhile, nowadays they are used to pull weights, too!
Despite their notorious reputation, they will only turn violent if trained and raised to be so, otherwise, they are very loving and gentle companions!