As nouns the difference between animal and fooder
is that animal
is in scientific usage, a multicellular organism that is usually mobile, whose cells are not encased in a rigid cell wall (distinguishing it from plants and fungi) and which derives energy solely from the consumption of other organisms (distinguishing it from plants) while fooder
is (obsolete|or|rare) food for animals.
As an adjective animal
is of or relating to animals.