Wondernose: What animal has scarlet and bright blue skin on its face and haunches?

Wondernose: What animal has scarlet and bright blue skin on its face and haunches?

Male mandrill. Photo © Freder/iStock.com. This sounds like a very fantastic creature, doesn’t it, Wondernose? It is one of the most brightly colored mammals in the world. The adult male has bare patches of skin on both the face and the posterior. The bridge and the...