what animals do deer eat?

Deer eat browse - the shoots and ends of tree limbs - and they'll eat the bark from brush too. And inadvertently they probably eat a lot of insects. Insects are a great source of protein.

I can't remember details, but I did see a documentary about deer that live in this isolated place, and when there are food shortages, the deer actually scavenge other dead animals. The theory is they are liking calcium from the bones.

Perhaps an occasional insect caught in the vegetation. They eat the ticks off their skin. But deer are generally herbivores.

Deer are considered herbivores they eat vegetation, there stomachs arn't built to be able to break down meat, and they lack the teeth to do that. Maybe the odd insect but that's it.

None Deer eat plants. They are prey, not a predator!

they are vegetarians.