'Dog Whisperer' Cesar Millan being investigated for animal cruelty

"Dog Whisperer" star Cesar Millan is being investigated following an animal cruelty accusation, TheWrap has learned.

The host, who currently has a show on the Nat Geo WILD Channel titled "Cesar 911," had a complaint made against his Santa Clarita, California, dog psychology center on Thursday.

"There was a complaint that we received and we are investigating the matter," Deputy Director Danny Ubario of L.A. County Animal Control, told TheWrap.

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"An officer visited the center today and it is currently under investigation."

The complaint was made by a single citizen but no further details could be released as it is an active case, Ubario explained.

A TMZ report claimed that the incident involved a dog attacking and injuring a pig during a training session.

Millan is a self-taught dog behaviorist who quickly rose to fame with his series "Dog Whisperer with Cesar Millan," which was broadcast in more than 80 countries worldwide from 2004 to 2012.

"Cesar 911" premiered on the Nat Geo WILD Channel in 2014.