I had a ‘mutt’ that killed at least 43 woodchucks one summer. The dog was always with me while I worked in the apple orchards near home.
They (dogs) can make good hunters. While managing an apple picking crew, there was one man who always brought his dalmatian, that dog was a good ‘mouser’ - 20-50 mice a day.
Did the woodchucks ever manage to get a piece of your dog?
With their teeth and claws they have been known to take a chunk out of a dog.