Humans remember the people we meet by recognizing faces, voices, or with the help of a handy-dandy name tag. But do our canine companions do the same? Can a dog recognize someone they haven’t seen in a long time? We asked Barnard College dog cognition researcher Alexandra Horowitz to help us find the answer.

Got a question that’s keeping you pup at night? Send it to us at BrainsOn.org/contact, and we’ll search doggedly for the answer!