4. Big cats They might look like a little bigger than your pet cats, but don't forget, all of them belong to the cat family, so they eat flesh, be it human flesh.
In North America, pumas are an occasional threat to lone hikers and small children.
But all of the world's big cats — including tigers, lions, jaguars, leopards and cheetahs — can threaten lives if they are mishandled.
There are an estimated 15,000 big cats kept captive in the United States, and only a small percentage of them are in accredited zoos.