Wolves, bears, humans, coyotes and other carnivores, Even snakes
What Eats Cows In The Food Chain?
Cow can be eaten by number of creatures like Humans, crocodile, lion. Usually while drawing food chain, human is preferred.
Humans
People
People, and other carnivores even other cows
Grass
I was watching a movie the other day and a croc about the size of a semi ate a big cow. Betty white was raising it in her lake.