Sumatran Orangutans, Indomalaya pavilion, Toronto Zoo.
These guys mean business. Just look at 'em.
Shot through the (plexi-?)glass enclosure under rather dim light - hence the slow shutter speed and motion blur on the little one.
Nikon D5000 / Nikkor 55-300mm @ 200mm,1/80th sec., f/5.0, ISO 1000. Red Paw Media "Bleach Bypass Pro" + Filter Forge "Film Frame".