- Carnivore - the eating of animals
- Hematophagy - eating blood
- Insectivore - eating insects
- Myrmecophagy - eating ants and/or termites
- Lepidophagy - eating fish scales
- Homiovore - eating humans or other sentient humanoids
- Molluscivore - eating molluscs
- Mucophagy - eating mucus
- Ophiophagy - eating snakes
- Piscivore - eating fish
- Spongivore - eating sponges
- Herbivore - the eating of plants
- Folivore - eating leaves
- Frugivore - eating fruits
- Graminivore - eating grasses
- Granivore - eating seeds
- Nectarivore - eating nectar
- Palynivore - eating pollen
- Xylophagy - eating wood
- Omnivore - the eating of both plants and animals
- Fungivore - the eating of fungus
- Bacterivore - the eating of bacteria
The eating of non-living or decaying matter:
- Coprophagy - eating faeces
- Detritivore - eating decomposing material
- Geophagy - eating inorganic earth
- Osteophagy - eating bones
- Scavenger - eating carrion
There are also several unusual food sources which can give rise to opportunistic or desperate feeding behaviours, such as:
- Cannibalism - feeding on members of the same species
- Self-cannibalism - feeding on parts of one's own body (see also autophagy)
- Sexual cannibalism - cannibalism after mating
- Kleptoparasitism - stealing food from another animal
- Trophallaxis - eating food regurgitated by another animal
- Oophagy - eating eggs
- Ovophagy - eating embryos
- Paedophagy - eating young animals
- Placentophagy - eating placenta