What animal is eating our hostas? How do we keep them safe?

This looks like rabbit damage. You can keep rabbits away using chicken wire, or you can put your hostas in pots raised above the ground so the rabbits can’t get to them.

Related Videos:
Protect Your Garden from Hungry Animals: Use Bird Netting
Keep Voles at Bay: Building Wire Cages to Protect Your Plants

Related Resources:
Keeping animals out of your garden
Preventing Wildlife in the Garden