All animals are heterotrophs, so are all protozoans, fungi, and most bacteria. A heterotroph is an organism that cannot manufacture its own food and instead has to obtain its food and energy, by taking in organic substances, i.e. plants and/or animals. read more
Heterotrophs may be subdivided according to their energy source. If the heterotroph uses chemical energy, it is a chemoheterotroph (e.g., humans and mushrooms). read more