The gray woolly monkey has a coarse, short, gray coat, for example, while the Peruvian yellow-tailed woolly monkey has longer, softer fur the color of dark chocolate with a distinctive yellow ...

Scientists think these outsize organs create an echo chamber that amplifies the monkey’s ... a coat of light brown fur that turns red around the head and shoulders and gray at the arms, legs ...

The newly identified species of monkey, Popa langur in Myanmar’s central ... These monkeys are small and covered in soft fluffy gray fur with silvery grey-white chests and bellies.