Golden monkeys love bamboo. They eat the young shoots, climb up the slim stems, and use the bamboo as a kind of bouncy castle - leaping from one stalk to another. A bamboo stem bends down as a monkey lands on it, then springs back up when the monkey jumps off. They use this trick to travel through the forest very quickly.
They live in groups of about 30 to 80 monkeys. The youngsters play together a lot - chasing, climbing, pretending to fight, tumbling out of low branches. Mothers carry their babies on their tummies for the first few weeks, then on their backs. By six months old, the little ones are climbing on their own.
Golden monkeys are quite hard to spot. Their bright fur looks orange against the green forest, but they move so fast and so high that visitors often just see a flash of gold and hear the bamboo creak. Patient ranger guides know which family is in which part of the forest each day, and lead visitors quietly along old trails.
Apart from a tiny number of golden monkeys in protected forests in Uganda and the Democratic Republic of Congo, Rwanda's Volcanoes National Park is one of the last places on Earth where this monkey still lives. Protecting the bamboo forest there means protecting the monkey - they cannot live anywhere else.