The sole food consumed by fawns in the wild is their mother’s milk. As they develop, young deer consume solid plant foods including grass, leaves, and fruits.
If a deer fawn loses its mother, it can be administered a milk substitute using a bottle. Both goat and cow milk are suitable substitutes, however goat milk is suggested. Some merchants provide goat milk or a general replacement milk for wildlife that is suitable for doelings. Older deer require solid food in addition to the formula and can accept bananas and baby rice cereal as additives. Eventually, the deer completely weans off milk and consumes just plant materials.