Do monkeys eat meat?

Yes, in the wild they will eat snakes, lizards, birds, etc. In captivity a little white chicken meat (no bones) is a good source of protein as is mealworms.

Some monkeys do eat (or primates better said) chimpanzees are even caught on film ripping limbs from their own kind, and will lead to death. They'll eat the carcass and so that answers ur q.

When they get a blood lust and bite people. This was the original way humans first caught AIDS.

if bugs do not count, no.

We eat meat because our muscles require protein to grow, protein is found in the muscles of other animals, aka meat.