They are usually nocturnal and are detritivores, feeding mostly on dead plant matter.

The Virgin River chub feeds on small fish, insects, and plant matter.

Katydids feed chiefly on plant matter, though several also eat other insects.

This bird feeds on both plant and animal matter.

The second and third division hunts for arthropods that feed on dead plant matter.

The threadsail filefish is an omnivore, and can feed on plant or animal matter.

House mice primarily feed on plant matter, but they will also accept meat and dairy products.

House mice primarily feed on plant matter, but are omnivorous.

It feeds on worms, benthic crustaceans, insects, and plant matter.

It feeds at night on fish, insects, and plant matter.