American Pit Bull: Selectively bred for dogfighting, known for their lethal bite and refusal to let go.
Rottweilers: Calm and docile with family, but aggressive towards strangers or perceived threats.
Dogo Argentino: Considered highly dangerous and banned in multiple countries due to aggressiveness.
German Shepherd: Used in military and police work for their intelligence, power, and potential for deadly attacks.
Chow Chow: Teddy bear appearance, but can be extremely dangerous if provoked or threatened.
Wolf Hybrid: Cross between domestic dog and wild wolf, challenging to train and control, posing a risk.