A surveillance camera captured a mountain lion leap over a fence at a San Bruno home early Monday morning.
The mountain lion was spotted shortly after midnight in the Rollingwood area, San Bruno police said.
Sue Rantisi's surveillance system recorded the mountain lion in action. She said the big cat approached from the street, jumped over the fence and went into her backyard.
"Mountain lions are a natural part of our environment," police said in a Facebook post. "Please be aware this could be your backyard!"
People who see mountain lions are asked to contact authorities immediately.
Those who happen to encounter one are told to face the animal, make noise and wave their arms to make themselves appear larger. People in that situation are also told to throw objects at the animal and fight back if attacked.