A study looking at over 50,000 dogs in the U.S. is aiming to understand how they age and what clues dogs can give us about how humans age, too. We speak with Daniel Promislow, one of the co-founders of the Dog Aging Project, about the genetic and environmental factors that allow dogs to age healthily. #dogs #aging #science #podcast »»» Subscribe to CBC News to watch more videos: http://bit.ly/1RreYWS For breaking news, video, audio and in-depth coverage: https://www.cbc.ca/news Follow CBC News