filter feeding - obtaining food suspended in the water column deposit feeding - obtaining food particles in soil fluid feeding - obtaining food by consuming more parasites fluids food-mass feeding - obtaining food by eating pieces of other organisms

A second classification refers to the food groups a few brute specialize inside, like:

Carnivore - meat Detritivore - decomposing material Folivore - leaves Frugivore - fruits Granivore - seeds Herbivore - plants Insectivore - insects Nectarivore - nectar Mucivore - plant juices Mycovore - fungi Omnivore - plants and meat Piscivore - fishes Sanguinivore - blood Saprovore - dead matter Etc.

There are likewise many food sources which own caused the development of specialised feeding behaviors, such as:

Ophiophagy: feeding on snakes Hematophagy: feeding on blood Coprophagy: feeding on faeces Mucophagy: feeding on mucus Cannibalism: feeding on members of the equivalent species Trophallaxis: regurgitation of food to another animal Etc.

Inside several cases, a specialization of parasites within a specific nature and severity of food source has been one of the major is the causal agent of of evolution of form and work, like:

mouth parts and teeth, such as around whales, vampire bats, leeches, mosquitos, predatory animals like felines and fishes, etc distinct forms of beaks in birds, such as inside hawks, woodpeckers, pelicans, hummingbirds, parrots, kingfishers, etc. specialised claws and more appendages, for even apprehending or killing (including fingers within primates changes inside immune system colour for facilitating camouflage, disguise, setting up traps for preys, etc. changes in the digestive patterns, such as a system of stomaches of herbivores, comensalism and symbiosis