Social groups in the wild vary in size from three or four up to 20 individuals. While marmosets typically form groups which contain a number of adults of each sex, breeding is usually restricted to ...

The single breeding female has been observed, in the wild, to mate with several males in the troop, but it is not known whether matings with males other than the dominant proved fertile. The natural ...

Common marmosets are proving to be a vital key to ... Their rapid growth and quick sexual maturation help to expedite breeding programmes. And their complex social behaviours closely mirror ...

A monkey's uncle may actually be its father, according to a new study showing that germ-cell chimerism is rampant in marmosets. These animals often carry another individual's sperm or egg cells ...

Behold the World's Smallest Monkey: The Pygmy Marmoset (02:17) National Treasure: The Giant Panda Steals Hearts (and Bamboo) at the National Zoo (04:34) 5 Record-Breaking Bird Migrations (02:56 ...