my dog loved to eat Cymbopogon citratus.

I have seen video of a horse eating a yellow chick, a deer eating snakes, a cow eating some small animal.

Chickens are so stupid, I have seen one eating one of her own eggs which broke.

many turtles (eat fish, birds) and frogs (snakes, other frogs) are omnivores, although we think about them as herbivores or insectivores

we see birds-of-prey as predators, but many other bird species eat other birds, rodents, small mammals, etc.

rodents are usually omnivores too... minx are surprisingly vicious...

monkeys eat other monkeys, baby deers, etc.