Three Adorable, Endangered Tiger Cubs Born at the London Zoo

ZSL London Zoo is now home to three cubs belonging to one of the world's rarest big cat species. There are only some 300 Sumatran tigers (Panthera tigris sumatrae) still living in the wild. They're classified by the IUCN Red List as "Critically Endangered," because they suffer from habitat loss, territory… » 3/13/14 8:47pm 3/13/14 8:47pm