Department of Natural Resources
Generally speaking, pets are welcome in Michigan state parks and campgrounds, state forest campgrounds, state-managed harbors, state-designated trails and boat launches (except for some sites during certain times of the year). Please keep in mind that pets are not allowed in designated swim areas, areas protected for endangered species, such as piping plover, and any other area marked otherwise.
The following rules apply to pets at ALL locations:
Pet-friendly lodging - Pet-friendly lodging is available at several locations. There is an additional fee of $10 per night/pet/cabin or $15 per night/pet/lodge. Up to two pets (cats and dogs only) are allowed. Overnight lodging options can be booked up to 12 months in advance at MiDNRReservations.com.
Pet-friendly shoreline - Pets are allowed along the shoreline with the exception of designated bathing/swimming areas within state parks and areas signed otherwise (ie. piping plover nesting habitat). Pets must be kept on a 6-foot leash even if they are in the water. The following are some highlighted locations: