Panama is a great location for nocturnal photography. All sorts of creatures come out as soon as the sun goes in — including quite a few different species of opossum. This one is the four-eyed opossum, named for the bright areas above the eyes that will get more distinct as this youngster grows older.
Nikon D810 with Nikkor 200-400mm lens (at 400mm) ISO 500, f/8 at 1/100th of a second, Nikon SB-900 flash