Answer:
They search for their food or catch prey.
Explanation: There are three types of animals
1)Herbivores
2)Carnivores
3)Omnivores
Herbivores are basically vegetarians.They only feed on plants.
Carnivores are meat eaters.
Omnivores eat plants and meats both.
So basically it depends on the type of animals. If they are herbivores they will only eat plants which is really easy to find.
If they are carnivores they will catch prey on other animals.Which is really difficult, they need to look for foods and fight for them.
Omnivores eat both so it's quite easy for them too.