An organism that obtains its food from other organisms is called a heterotroph.

Here's a breakdown:

* Hetero means "other"

* Troph means "nourishment"

So, a heterotroph literally means "other nourishment". This means that they cannot produce their own food like plants (autotrophs) and must consume other organisms for energy.

Examples of heterotrophs include:

* Animals: All animals are heterotrophs, from tiny insects to giant whales.

* Fungi: Fungi obtain their food by absorbing nutrients from decaying organic matter.

* Many bacteria: Some bacteria are decomposers, while others are parasites that live on or within other organisms.