The world’s smallest monkey is called the pygmy marmoset, and it is, predictably, very tiny, just a little scoop of fur. It ...

And when the scientists played the recorded calls back to the animals, they found that marmosets were more likely to respond to calls containing their “names” than they were to calls without them.

Marmosets are small monkeys that live high up in the canopies of South American rainforests. There are more than 20 species, and most could fit comfortably in an adult human's hand. Marmosets have ...

The world’s smallest monkey is called the pygmy marmoset, and it is, predictably, very tiny, just a little scoop of fur. It likes to eat the sticky resin found in tree bark, known as gum ...