Mountain lions go mostly unmentioned in Massachusetts state law. The majority of their protection arises from their lack of regulation. As a result, mountain lions are considered nongame wildlife, illegal to hunt or trap for fur. However, these protections are far from sufficient.
Massachusetts has no mountain lion management plan, they are not listed as an endangered species, and poaching laws are laughably light. Poaching is punishable by a fines as low as $50.