Oscar-winning actress Nicole Kidman has reportedly been spotted acting like a chimpanzee at a zoo in Los Angeles.

The actress was imitating the animals to entertain her two children. According to IOL.com, a witness said: "When people noticed it was Nicole quite a crowd started to gather. She brought along a video camera to film the chimps and was clearly having lots of fun - as were the kids. But the chimps just ignored her."

The two children are adopted children she had with her ex-husband Tom Cruise.