But for some people, life with their beloved companions has turned into a recurring nightmare. Now there's hope for dog lovers everywhere to benefit from the lessons of renowned dog behavior expert Cesar Millan in the new National Geographic Channel series The Dog Whisperer.

This series goes into the homes of problem dogs and their frustrated owners, and documents the remarkable transitions that take place under the guidance and teaching of Cesar Millan.

WATCH A PREVIEW

Find out what Cesar is up against the National Geographic preview.

CESAR'S TIPS & TECHNIQUES

Cesar can find a way to help almost any dog. Check out some of his secrets.

National Geographic