There may be nearly 40 different species of wild cat running around out there, but only four make it into the big cat club: the lion, tiger, leopard and jaguar. And they are armed with an arsenal of weapons and bulk to back up major attitude. In their world, nothing is small and many things are surprising. So get ready for a vicious lesson on what makes a big cat a big cat. Is it the roar? The teeth? Maybe it is their diet, because they are certainly not living on cat food and loading up litter boxes. We will take a look at their size, speed, claws and hunting capabilities, among so much more.