Cesar Millan is a professional dog trainer. In his words, he "rehabilitates dogs, trains people." He is best known for his television series, Dog Whisperer, which is currently in its fifth season and airs on the National Geographic Channel in the U.S., BIO in Australia, and on Sky 3 in the UK. He is also the co-author of the best selling books Cesar's Way, Be the Pack Leader and A Member of the Family.