GMF supports an abundance of diverse wildlife species, such as resident white-tailed deer, moose, black bear, turkey populations, nesting sites for neotropical migrants, and migratory waterfowl. The forest cover provides a habitat for a diverse furbearer population, both predator and non-predator. Perennial streams and ponds, wetlands, and vernal pools contain healthy beaver, amphibian, reptile, fish, and other aquatic life.
Sustainable forest management practices provide niche habitat requirements for species to thrive. This is done through tree and brush cutting rotations to create early successional habitats.
GMF has seven ponds covering over 78 acres of the Forest. There are 341 acres of swamp and wetland, which creates superb wildlife habitat and provides some measure of flood and fire control.