The common marmosets are a type of monkey. They are a particular species of marmoset in the genus Callithrix.
They have distinctive large white ear tufts and their tail is striped, with alternate wide dark and narrow pale bands. Their coat is grey, black, brown and white with streaks of orange. The common marmoset is native to the scrub forest and drier Atlantic forest of north eastern Brazil.
They are arboreal and weigh less than a can of baked beans. Claw-like nails allow them to cling to trees.
In the wild they live in small family groups of three to 15 individuals. Their day is spent socialising, and finding and feeding on gum, insects, lizards, snails, fruit, flowers and nectar whilst staying alert to danger.