The remote nature of Kettle Creek State Park makes it a wonderful place to see wildlife. Black bear. whitetail deer, wild turkey, raccoons, possums, porcupines and squirrels are common residents. Elk, river otters, and fishers are elusive animals that can be found in the park. Kettle Creek Reservoir is a beacon for waterfowl, especially in the spring and fall migrations. Loons, grebes, ducks, and gulls use the lake and wetlands as a rest stop. Bald eagles, kingfisher, great blue heron, wood duck, and merganser can be seen year round. Ospreys are common summer visitors.
The field and edge habitats of the park are nesting spots for bluebird, indigo bunting, goldfinch, hummingbird, cardinal, and common yellowthroat. The forest of the park is composed of deciduous hardwoods and a few stands of hemlock and pine. Warblers, vireos, thrushes and other songbirds nest in the park and can been seen migrating through. Woodpeckers, nuthatches, sparrows, finches, jays and ravens can be found in the forest, even in winter. Golden eagles have been spotted soaring the valley in the winter.