This is because animals are heterotrophic. We cannot manufacture essential amino acids in the body ( these are usually amino acids 8/10) so tear amino acids need to be obtained externally from food sources. Of we do not eat food the the body will not be able to produce these essential amino acids and the essential proteins that are needed by the body.
Animals have to consume food as they cannot make their own food
animals can't make their own food, plants and people can but animals can't
Consumers are organisms that cannot make their own food.
Animals and humans do not contain chlorophyll and can not make their own food!
Animals that cannot make their own food are called consumers.
An organism that cannot make its own food is called a heterotroph.
Parasites.
Because its easier to hunt down their pray than make something.
animals don't have more thinking ability and also why they want to cook as they are eating raw.
Consumers are animals that cannot make there own food from the process of photosynthesis They instead eat other animals or plants.
ALL animals are "consumers" (they can not make their own food) The ONLY organisms that can make their own food are the plants there are the "producers". Consumers live on Producers.
Heterotrophs are organisms that cannot make their own food. They have to depend on other plants and animals for nutrition.