which animal has the least amount of predators?

Panda maybe

Tiger. Great white shark

There is a long list of animals with very few predators. Among them is the Killer Whale.

Humans....

Unless we put ourselves in the way of a hungry lion, polar-bear or shark, of course.

Though they in turn have no predators except humans, which are capable of killing anything from an amoeba to a blue whale.

Probably polar bears. Man is their only predator

Orca?