Complex sentence: Many of the area's lakes get stocked with cutthroat, rainbow, and brook trout; amphibians such as frogs can be found, while terrestrial animals include deer, elk, and American black bears.
Split into simpler sentences: Many of the area's lakes get stocked with cutthroat, rainbow, and brook trout. Amphibians such as frogs can be found in the wilderness, while terrestrial animals in the area include deer, elk, and American black bears.