Primate
Mammals characterized by large brains, forward-facing binocular vision, and dexterous grasping hands.
Bonobo
The Congo forest ape where the females rule the roost.
Bornean Orangutan
Borneo's biggest mammal in the trees: long arms for the canopy, hands and feet that both grip, and a long call that can be heard a kilometer or more away.
Chimpanzee
DNA letters about 1.23% different from a human's, tool kits that vary from community to community, and Machiavellian troop politics.
Gelada
The Ethiopian highland monkey that grazes mainly on grass, flashes a bleeding-heart chest patch, and rolls its lip back to bare its gums in a facial display no other primate can make.
Geoffroy's Spider Monkey
The monkey whose tail works as a fifth limb.
Golden Snub-Nosed Monkey
Narrows the blood vessels in its skin to cut heat loss, then burns 14 percent of its body mass getting through a winter in China's mountains.
Hamadryas Baboon
Silver-maned sacred baboon of ancient Egypt, living in harems that stack into clans, bands and troops hundreds strong.
Japanese Macaque
The world's northernmost wild monkey, meeting -20°C mountain winters with long fur, huddles and, in one valley, a hot-spring soak that may help keep it warm.
Lar Gibbon
A rainforest singer whose pair duets average 11 minutes and carry up to a kilometre.
Mandrill
Males are the largest monkeys alive, with faces colored blue by light-scattering collagen and red by blood, and canine teeth whose length tracks their breeding years.
Mantled Howler Monkey
A leaf-eating monkey whose males' calls seem to help keep neighbouring troops apart.
Mountain Gorilla
Up to 220 kilograms of plant-eating ape, a chest beat heard more than a kilometer away, and the only great ape whose numbers are growing.
Philippine Tarsier
Hand-sized night primate with the largest eyes for its body of any mammal, a head that turns 180 degrees, and legs built for jumping.
Potto
A slow, silent nocturnal primate that can hold still on a branch for long periods without fatigue, and presents predators with a shield of elongated neck-vertebra spines.
Proboscis Monkey
An oversized nose that works as both a visual badge and a vocal amplifier, webbed fingers and toes that help it swim across rivers, and a cow-like habit of bringing food back up to chew it again.
Ring-Tailed Lemur
Black-and-white ringed tail, yoga-pose sun worship, and wrist gland scent wars.
Tufted Capuchin
A stocky Amazon monkey that smashes fruit its jaws cannot crack, or opens it with a piece of branch.