A Lesson in Aggression | Dog Whisperer

Cesar takes an aggressive German Sheppard named Troy to his long time colleague to measure his "level of aggression". ➡ Subscribe: http://bit.ly/NatGeoSubscribe ➡ Get More Dog Whisperer: https://on.natgeo.com/2mgGMuV #NationalGeographic #CesarMillan #DogWhisperer About National Geographic: National Geographic is the world's premium destination for science, exploration, and adventure. Through their world-class scientists, photographers, journalists, and filmmakers, Nat Geo gets you closer to the stories that matter and past the edge of what's possible. Get More National Geographic: Official Site: http://bit.ly/NatGeoOfficialSite Facebook: http://bit.ly/FBNatGeo Twitter: http://bit.ly/NatGeoTwitter Instagram: http://bit.ly/NatGeoInsta Dog Whisperer: Troy and Roxy : http://channel.nationalgeographic.com/channel/dogwhisperer/?source=4003 A Lesson in Aggression | Dog Whisperer https://youtu.be/S3XrKkrAZpY National Geographic https://www.youtube.com/natgeo