To get to know African wildlife better, scientists set up hundreds of motion-sensitive cameras in the Serengeti.
If something moves in front of the trap, the camera snaps a sequence of up to three pictures. The project, Snapshot Serengeti, has taken more than a million images.
Their study, published in Scientific Data this week, took 28,000 volunteers to sift through and analyze the images. Here are some of the best selfies.