A creature that is physiologically adapted for eating and digesting both plant and animal matter.
Any creature with a diet that consists mainly of meat, whether it comes from animals living or dead. Some species are considered carnivores even if their diets contain very little meat but involve preying on other animals (e.g., predatory arthropods such as spiders or mantids that may rarely consume small vertebrate prey). In addition to baseline carnivores, there are many subcategories that may provide more appropriate classification.
An obligate, or true carnivore, has a diet that subsists only of meat. They may consume other products presented to them, especially animal products like cheese and bone marrow or sweet sugary substances like honey and syrup, but, as these items are not essential, they do not consume these on a regular basis. True carnivores lack the physiology required for the efficient digestion of vegetable matter, and, in fact, some carnivores eat vegetation specifically as a way to induce vomiting.
A carnivore which lives on eating fish.
A carnivore with a diet that consists chiefly of insects and similar small creatures.
Carnivorous Plant / Carnivorous Fungi
Plants and/or fungi that capture and digest insects or microscopic animals.
NOTE: This is only in real world terms. There is no limit in prey size when it comes to fantasy worlds.
Any organism that eats only plants. Herbivores form an important link in the food chain as they transform the sun's energy stored in the plants to food that can be consumable by carnivores and omnivores up the food chain. As such, they are termed the primary consumers in the food chain. Much like carnivores, there are many subcategories for herbivores that may provide more appropriate classification.
Frugivore / Fructivore
A herbivore that feeds mostly on fruit.
Folivore / Frondivore
A herbivore that feeds mostly on leaves.
A herbivore that feeds on nectar.
A herbivore that feeds on seeds.
A herbivore that feeds on pollen.
A herbivore that feeds on plant fluid.
Any creature that feeds primarily on blood.
Any creature that feeds on rocks or minerals.
Any creature that feeds on the gases in the atmosphere.
Any creature that feeds on creatures with psychic abilities.
Any creature that feeds on dead or rotting flesh.
Any creature that feeds on rotting organic material (i.e. dead plant matter or waste from other living creatures).