[Millan] burst on the scene in 2004 when The Dog Whisperer premiered. He has numerous celebrity clients, including Jada Pinkett Smith, who hired him when he was still a limo driver to help rehab her pack of Rottweilers. And Denise Richards is featured in a segment this week asking for help with her three unruly pooches. The series was just nominated for an Emmy. In April, he published Cesar's Way: The Natural, Everyday Guide to Understanding and Correcting Common Dog Problems.

One was filed by 8 Simple Rules producer Flody Suarez, who said his Lab was hurt after being put on a treadmill at Millan's center. The lawsuit claims breach of contract, fraud, animal cruelty and intentional infliction of emotional distress, among other allegations. It seeks more than $25,000 in damages. "I don't know the person," Millan says. "It's not a very nice lawsuit. I didn't touch the dog. The dog was at my center."

The other suit is from former publicist Makeda Smith and her partner, Foster Corder, who have sued Millan and other defendants, including the National Geographic Channel, claiming that Smith originally conceived the name "Dog Whisperer" for Millan.