The category of organisms that eat other organisms for their food is called heterotrophs.

Here's a breakdown:

* Heterotrophs: These organisms cannot produce their own food through processes like photosynthesis. Instead, they obtain their energy and nutrients by consuming other organisms.

* Autotrophs: These organisms are the opposite of heterotrophs. They can produce their own food through photosynthesis or chemosynthesis. Examples include plants and algae.

There are several types of heterotrophs, categorized by what they eat:

* Herbivores: Eat only plants.

* Carnivores: Eat only other animals.

* Omnivores: Eat both plants and animals.

* Decomposers: Break down dead organisms and waste products.

Let me know if you'd like to learn more about any of these categories!