If males and females do not cohabitate, it will make it hard for them to reproduce. Study sparks concern over dramatically ...

Lion tamarins take their name from their impressive manes—thick rings of hair reminiscent of Africa's great cats. The golden lion tamarin may be the most beautiful of the four lion tamarin species.

Mountain lion attacks are rare in California, but incidents have been increasing and the cats' behavior has been changing in the past few decades, according to on-the-ground accounts. Writer ...