A small mountain lion sighting was confirmed below Building 77 on Sunday (Feb. 19). Mountain lions generally exist where deer are found. Warning signs have been placed at all Lab gates. As a precaution, the use of the stairs below 77 at dusk, night, or dawn is discouraged, and a sign has been posted. To limit an interaction with a mountain lion, avoid hiking or jogging in the undeveloped areas of the Lab alone or at dawn, dusk or night. If you see a mountain lion, immediately call 7-911 from any Lab phone or 911 from any cell phone. Go here for more safety information from the California Department of Fish and Game.