Birds adapt to many of our attempts to frighten them off, but they never adapt to the sight of a natural predator.

The episode introduces the natural predator of the tribbles and genetically engineered tribbles which no longer reproduce but instead grow much larger.

However, due to the lack of a natural predator, the gray wolf, the bison thrived on the island and the herd rapidly increased in size.

If a king cobra encounters a natural predator, such as the mongoose, which has resistance to the neurotoxins, the snake generally tries to flee.

This species, as a natural predator of mosquito larvae, has found use in mosquito control efforts.