The oncilla, also known as "little spotted cat," "tiger cat," or "tigrina," has the scientific name of Felis tigrina. They range from Costa Rica to Argentina, living in forests and resemble ocelots and margays but are even smaller, from 3 to 6 pounds. Not much is known about them in the wild, but they appear to be solitary, partly arboreal, and eat small mammals, reptiles, and birds. They have been raised in captivity, where the unusual teething pattern of their kittens was recorded -- a twenty-one-day-old kitten will have no sign of any teeth, and then several will erupt in a matter of hours. In the wild, they are threatened by deforestation and being hunted for their fur.