Update: Mountain lion attacks and kills deer on deck of house in Portola Valley


A mountain lion attacked and killed "a small deer" on the deck at the rear of a Palmer Lane house in Portola Valley early on Sunday morning, April 25, according to Lt. Ray Lunny of the San Mateo County Sheriff's Office.

The mountain lion was not after pet food as originally thought, Lt. Lunny told The Almanac.

The lion had actually followed the deer on to the deck, he said. The lion's efforts to subdue the deer woke the resident, who told deputies that he heard something hit the sliding glass door at the rear of his house around 4:30 a.m.

The lion "slowly walked away" after seeing the resident standing there looking at the scene, Lt. Lunny said. The resident said he wondered whether the lion would, in its struggles, accidentally break the glass and end up inside the house, Lt. Lunny said.

The resident disposed of the deer carcass, Lt. Lunny said.

Residents are advised not to approach mountain lions, and try to appear large and make noise if one is nearby. The cats are most active at dawn, dusk and at night.

For more information about mountain lions, go to


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