What it eats: Fruits, flowers, nectar, tree sap and small insects Why it's awesome: Northern giant mouse lemurs may be tiny, but they have a striking trait: remarkably large testicles. The primates ...

When an animal won't stay still long enough for to snap a photo, adding it to the Photo Ark can be a painful process. Watch Joel Sartore's photo shoot with this fast-moving brown mouse lemur.

If humans had a similar body ratio to the northern giant mouse lemur, their testicles would be the size of grapefruits. When you purchase through links on our site, we may earn an affiliate commission ...