If you've ever watched a nature documentary featuring lemurs — or the animated feature "Madagascar," with characters King Julien, Maurice and Mort — you have probably fallen in love with the ...

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 ...

Madagascar is home to a unique biodiversity with a large number of endemic species, among those many lemur species, including the mouse lemurs. This diversity is also found in their retroviruses.