Most monkeys live in tropical rainforests where it never gets cold. Barbary macaques are different - they live up in the mountains, where it actually snows in winter. Their thick fur keeps them warm, and when it gets icy they often huddle together in a furry monkey pile to share heat.
They live in big family troops of 20 to 40 monkeys. What is unusual is that aunts, uncles and even older brothers all help look after the babies. A baby Barbary macaque often gets passed around like a parcel for cuddles - even the male monkeys carry the babies around, which is rare in the monkey world.
Barbary macaques are clever animals. They use rocks to crack open snails, they remember which trees fruit at which time of year, and they have even been seen using leaves as little umbrellas in the rain. In the autumn they collect acorns from oak trees and stuff their cheeks full to carry them home.
Sadly there are not many left in the wild. Algerian forest rangers work hard to protect the cedar forests where the macaques live, and school groups across the Atlas region learn about how to look after them. Every macaque counts.