Notice anything different about your street today? Just ask a dog.  On The Gist, Alexandra Horowitz from the dog cognition lab at Barnard talks us through a dog walk. She’s the author of Inside of a Dog and On Looking: Eleven Walks With Expert Eyes.  For the Spiel, a work of audio fiction about turning 30. This piece was commissioned by the Sarah Awards from Sarah Lawrence College.

Join Slate Plus! Members get bonus segments, exclusive member-only podcasts, and more. Sign up for a free trial today at slate.com/gistplus.