One reason is that a predator tends to select the least hardy as prey. The old, the injured, the sickly, the weak, those unable to move as fast as others are likely to fall prey to the predators first. This selection insures the survival of the fittest. The illustrations are by Leon Parsons, commissioned by Jim Thomas. Permission is granted to our viewers to copy and use this material in classroom projects only.
Commercial use is forbidden.
Thank you for respecting these terms.