This one animal is one of the most animals in human affection, pet cat or house cat is one of the greatest predators in the world. This cat can kill or eat several thousand species, big cats are usually less than 100. But because of its small size, the cat is not so dangerous to humans. The only dangers that can arise are the possibility of rabies infection due to the bite of a cat and also the scratching of a cat nails that is very sore and painful. Cats can be fatal to an ecosystem that is not a natural residence. In some cases, cats play a role or cause extinction. Cats ambush and paralyze prey in a manner similar to lions and tigers, biting the prey's neck with a sharp canine to injure the spinal cord or causing prey to be out of breath by damaging the way of breathing.