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 ...

The pygmies always come back to their feeding tree, though. Pygmy marmosets use their teeth to gouge holes in trees that secrete gum, or resin—not to be confused with sap, which runs through a ...