Consumers cannot manufacture their own energy like plants do so they eat other organisms. Consumers are broken down between herbivores, carnivores, and omnivores.

 Decomposers
 Herbivores
 Insectivores
 Omnivores
 Scavengers
 Secondary Carnivores (Predators)
 Top Carnivores (Predators)
Consumers (food chain)
Consumers (food chain), Wikipedia.org, Article with illustration.
http://en.wikipedia.org/wiki/Consumers_(food_chain...