Deers love apples. During the fall, they will eat any apple they can get their hands on. Like humans, however, they don’t eat the cores of the fruit. So, any rotting apple cores on the ground with odd bite marks could have been a deer’s meal. They’ll make quick work of the apples, and won’t leave much for others to eat when they’re done.
While this might be one of their favorite foods, they actually aren’t all that picky. They’ll eat whatever they can get their mouths on. Especially in the winter, when food is harder to find. They might eat grass that hasn’t been covered by frost or leaves on the ground if there are any available in the winter.