The diet of pygmy marmosets is largely comprised of tree exudates — the sap, gum, resin or latex that oozes out of plants.The incisors, which are narrow and elongated, help these tiny animals ...

Unlike humans, marmosets consistently give birth to twins without the association of any medical issues. It turns out the marmoset gene WFIKKN1 exhibits changes associated with twinning in marmosets.

From around the curve of the tree came the first pygmy marmoset, skimming along the surface, limbs and tail splayed against the trunk. Its head bobbed up and down, and it moved in quick jerks.