Complex sentence: Animals most frequently seen by visitors in this park area include raccoons, gray squirrels, deer, fishers, black bears, timber wolves, skunks, chipmunks, red squirrels, and porcupines also inhabit this park.
Split into simpler sentences: Animals most frequently seen by visitors in this park area include raccoons, deer, fishers, black bears, chipmunks, skunks, and red squirrels. Gray squirrels, timber wolves, and porcupines also inhabit this park.