The Mysteries of Optic Flow
How do birds manage to fly through narrow spaces without constantly bumping into trees or buildings? It turns out that they use a trick of the eye called optic flow. Understanding what optic flow is and how birds use it could help us build a safer world for our feathered friends.
Previews + Extras
Five Dogs With Crazy Résumés
S41 E9 - 2m 58s
Why do some dogs have short fur, others long tails, and still others wrinkly faces? Many dogs were bred to perform a specific tasks--from hunting vermin to wrangling bulls--and their physical characteristics were chosen to help them do their jobs.
Animal Minds: Dogs Preview
S41 E9 - 30s
How do dogs, sharks, dolphins, or birds experience the world? Airing April 16, 2014 at 9 pm on PBS
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