Mich. Comp. Laws § 317.63: Dogs; permissible killing.

Sec. 3.

Any owner or caretaker may kill any dog found wandering within 40 feet of any enclosure in which fur-bearing animals are kept, and there giving tongue or otherwise terrifying such animals: Provided, That the dog so killed is neither muzzled nor accompanied by the owner or by a person having charge or care of such dog.