How to protect a bunny nest from dogs

If there’s a bunny nest in your yard, your dogs will probably happily find it for you!

… great …

We want to protect the baby bunnies from dogs, but moving the nest is not an option (mom knows where the nest is but won’t know to look for her babies elsewhere if you move them. Cottontails also cannot move their babies themselves). So, how can we keep those bunnies safe from Fido?