Attention Dog Whisperer fans and dog lovers everywhere! National Geographic Channel is hosting its first-ever live online chat with the Dog Whisperer himself, Cesar Millan. Log on to www.ngcdogwhisperer.com on Friday, April 7, at 6 p.m., PT, immediately following an all-new episode of Dog Whisperer. From canine aggression to puppy problems to introducing a new dog in to your “pack,” Cesar will be on hand to advise you about your beloved canine companion.