Ticks feed on deer blood to the deer’s detriment.

The stork uses its saw-like bill to cut up the dead animals it eats. As a result, the dead animals carcass is accessible to some bees for food and egg laying.

Yucca flowers are pollinated by yucca moths. The moths lay their eggs in the flowers where the larvae hatch and eat some of the developing seeds.

Ostriches and gazelles feed next to each other. They both watch for predators and alert each other to danger. Since the visual abilities of the two species are different, they each can identify threats the other animal would not as readily see.

Hermit crabs live in shells made and then abandoned by snails.

A cuckoo may lay its eggs in a warbler’s nest. The cuckoo’s young will displace the warbler’s young and will be raised by the warbler.

Silverfish live in the army ant nests. They scavenge leftovers.