Mountain lions are currently locally extinct in Maine and receive no legal protection. In fact, they are barely mentioned in state regulations.
Despite a thriving historic population within the state and a population (or lack thereof) that reflects the need for protection, mountain lions are currently not listed as threatened or endangered by the State of Maine. Quite the contrary, in fact. Maine has no management or reintroduction plan, and mountain lion hunting is completely unregulated within the state. Due to their lack of legal status as wildlife in Maine, lions may be killed without repercussion or penalty.