The term for an organism that obtains its energy by eating other organisms is a heterotroph.

Here's a breakdown:

* Hetero means "other"

* Troph means "nourishment"

So, a heterotroph literally means "other nourishment," indicating that it gets its energy from consuming other organisms.

Here are some examples of heterotrophs:

* Animals: All animals are heterotrophs.

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

* Some bacteria: Many bacteria are decomposers, breaking down dead organisms for energy.

* Parasites: Parasites live in or on other organisms and feed off of them.

In contrast, autotrophs are organisms that can produce their own food through photosynthesis or chemosynthesis.