An organism that obtains its energy from the food it eats is called a heterotroph.

Here's why:

* Hetero means "other" and troph means "nourishment."

* Heterotrophs cannot make their own food like plants (which are autotrophs).

* They rely on consuming other organisms (plants, animals, or decaying matter) to get the energy and nutrients they need to survive.

Examples of heterotrophs include:

* Animals

* Fungi

* Bacteria

* Parasites