Eating

Eating is the ingestion of food. In biology, this is typically done to provide a heterotrophic organism with energy and nutrients and to allow for growth.

Animals and other heterotrophs must eat in order to survive – carnivores eat other animals, herbivores eat plants, omnivores consume a mixture of both plant and animal matter, and detritivores eat detritus.

Fungi digest organic matter outside their bodies as opposed to animals that digest their food inside their bodies.

Source: https://en.wikipedia.org/wiki/Eating