a coyote
Bears have no natural enemies, therefore no creature eats bears because nothing can best a bear.
I only know of one. It is called "El Alamula." It is a mulelike creature that eats livestock.
A Homosapien eating cenataur Kelpie
A bunyip is a mythical creature that is said to live in the swamp and watery areas of Australia. According to legend, it eats humans and animals.
Goats
Some people say it eats ambrosia and nectar( just like gods and goddesses) others say that it eats herbs and vegetables.
It eats grass by grazing
That's easy. The creature that eats zombies is a zombie-eater of course.
goats
Elephant goats
Goats
One invertebrate sea creature that eats them is the Octopus. A mammalian creature that eats them is the Sea Otter.