Foraging is a type of social behaviour in which an organism searches for wild food resources and it is important for animal's fitness because it determines its ability to survive and reproduce in a given environment.
In behavioural ecology foraging theory is a branch which is concerned with studying the foraging behaviour of the animals in response to the environment where the animal is living.
Thus, <em>foraging</em> is the benefit of social behaviour which involves searching for and collecting food.
He grouped the types of creatures according to their similarities: animals with blood and animals without blood, animals that live on water and animals that live on land.
