(CNN) — Endangered leopard sharks have been observed mating in the wild for the first time, with scientists witnessing a “threesome” involving two males and a female. The encounter was filmed by Hugo ...

Three leopard sharks made history. Off the coral-rich shores of New Caledonia, in the blue quiet of Abore Reef, they showcased an unprecedented sexual behavior. Dr. Hugo Lassauce, a marine biologist ...

ERIE, Pa. (AP) – A male leopard has killed a female leopard after workers at a Pennsylvania zoo put them together in an off-exhibit area in hopes they would mate ...