Widely considered the most dangerous sharks in the world, bull sharks are perfect killing machines. There are two places in the world where these deadly sharks wreak the most havoc: the US and Australia.

American sharks are responsible for more attacks, but the Aussies are more likely to kill you.

Hosted by bull shark attack survivor and former Navy diver, Paul de Gelder, and shark ecologist Kori Burkhardt, this Shark Week event pits these two populations against each other, comparing bite force, size, speed and aggression, to settle the question: which bulls are the world’s most dangerous?