An autotroph is an animal that produces food from chemicals using some form of ambient energy, like sunlight. Heterotrophs are organisms that must eat for energy. Dormice eat, and thus are heterotrophs. It makes no difference whether the dormouse is fat or thin.
heterotroph
heterotroph
Heterotroph
Heterotroph.
Heterotroph.
heterotroph.
heterotroph
Heterotroph
heterotroph
Autotroph
Autotroph
autotroph