Liger

A male lion crossed with a tigress, and bigger than either parent. In 2013, Guinness World Records named a liger called Hercules the largest living cat, at 922 pounds (418.2 kg). Imprinted genes, which act differently depending on which parent passed them on, may explain the size. Male ligers are sterile, but females are often fertile. Ligers exist only in captivity, and their breeding draws strong criticism from animal welfare groups because of the health problems the animals face. Some unlicensed zoos still breed them for profit.