Why is this animal unusual?
Winters in its home regularly drop below freezing and stay there. It survives by eating lichen scraped off trees and by huddling together in big furry piles.
Why does it look like that?
It has almost no nose – just two forward-facing nostrils. One idea is that a flat nose is simply harder to get frostbitten.
Strangest biological feature
A cape. Adult males grow long golden guard hairs down their backs, which can reach 20 in (50 cm).
Why is it strange?
It was named after Roxelana, the wife of an Ottoman sultan, who was said to have had a charmingly turned-up nose.
Interesting behavioral facts
Families join together into bands that can number several hundred. They spend nearly all their time in the trees.
Records held
It tolerates colder average temperatures than any other non-human primate.
