The Oprah Winfrey Show
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Siobhan and her dog, Christian Dior
After the show, Cesar Millan also helped Siobhan, who says she's at her wit's end with her pint-sized pup, Christian Dior. "He goes to the bathroom all over the house, but I can never catch him because he's the sneakiest little thing."

When Siobhan first bought Christian Dior almost two years ago, she says she began potty training him immediately. After he eats, Siobhan puts her pup on a mat to use the bathroom. Cesar says this house-training method may be the problem.

"You're not following the natural process of how they use the bathroom," Cesar says. "They walk, they find food, and they walk again. Then they have a bowel movement. That's the path."

Cesar says pet owners who have house-training troubles need to walk their dogs for a longer period of time or walk faster, which will accelerate the bowel movement.

Show your dog who's boss. »
From the show Never Before Seen Oprah Outtakes