The Amur leopard is an apex predator. It has no natural predators in the wild, although it is very vulnerable to hunting and poaching by human beings.
According to About.com, these big cats live off of roe deer, rabbits, small rodents, musk deer, moose and wild boar. Amur leopards are so dominant in their ecosystem that they even prey upon small black bears. Unfortunately, hunting for their pelts and bones has decimated their population. Despite being a formidable predator, demand for medicine made from their bodies, habitat encroachment and preventative killing of the animals to protect domestic livestock has left them one of the most endangered big cats in the world.