State Sen. Leland Yee, D-San Francisco/San Mateo, will honor San Francisco Zoo staff today for their roles in preventing two grizzly bears from attacking a man who climbed into the bear enclosure last weekend.

Kenneth Heron, 21, has been charged in San Francisco Superior Court with unlawfully disturbing a wild and dangerous animal and trespassing, both misdemeanors, for Saturday’s incident.

District attorney’s office spokesman Brian Buckelew has said it is still unclear how Herron got inside the bear exhibit, which is protected by high walls and a moat.

One of the two bears in the exhibit came up to Herron and sniffed his foot, but zoo staff fired a warning shot that kept the bears from attacking him, zoo officials said.

Yee will honor 11 zoo employees at 1 p.m. today at the zoo.

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