Smilodon:  This extinct cat, also known as the Sabertooth Cat, had a short tail, strong front legs and canine teeth up to seven inches long. These characteristics and others indicate that it ambushed prey animals rather than chasing them down.

Name: Sabertooth Cat (Smilodon fatalis)
Length: 8-9 feet
Weight: 400-500 pounds
Time: 1.8 million to 11,000 years ago (Pleistocene epoch)
Place: North America
Diet: meat-eater (carnivore)