While dogs may not be able to see quite as well as humans, they definitely have us beat when it comes to their sense of smell. Prepare to be amazed as this short video investigates the incredibly sensitive noses of man's best friend.

Learn all about dogs, from how they communicate with us, to how they've evolved along with our technology. This segment also talks about dog genetics and evolution- how can a single species contain breeds as different as Great Danes and...

Learn some interesting facts about human's first pet, dogs. [3:45]