Lily chases sheep for the first time in her shepherd-mix life, at Raspberry Ridge Sheep Farm in eastern Pennsylvania. Several times a year the farm invites dogs for "herding instinct tests."
The photographer thought it was a goat. The photo editor thought it was a goat. Sure looked like a goat to the author of this post. It turns out to be a sheep, in Dakar, Senegal.
Claire Harbage for NPR