Consumer.
Step-by-step explanation:
A consumer is a living organism that gets food from consuming other living things. Consumers, like a rabbit, will eat grass which is a living thing. Consumers are also called heterotrophs, meaning they can't make their own food. The opposite of this would be autotrophs, like plants, that make their own food.
There are different levels of consumers, a rabbit would be a primary consumer, since they only eat producers such as grass. On the other hand, secondary consumers only eat the primary consumers, like a fox eating a rabbit.