Laughing after a staring contest. One of a sequence of photos that recorded the interaction between visitors and a resident of Grizzly Ridge at the St. Louis Zoo. Looking through one viewing window at the "action" at another viewing window approximately 30+ feet away and at an angle.

Nikon D800 w/Nikkor 24-85mm f/2.8-4D

@85mm, f/4.5, 1/160s, ISO 900