Heterotroph

A heterotroph is an organism that is unable to synthesis its own organic carbon-based compounds from inorganic substances, thus it must feed on organic material produced/available from other organisms. Heterotrophs are the consumers in the food chain, so if they are animals they are either carnivores, herbivores, or omnivores, but fungi and bacteria are also heterotrophs. This picture is of a bull which is a heterotroph more particularly an omnivore because it must feed on plants (producers) to survive.

Source:
Heterotroph. biology-online.org. Retrieved August 30, 2011, from
http://www.biology-online.org/dictionary/Heterotroph