In a laboratory experiment centered around a colony known as the Amigos, researchers observed a subordinate female take over ...

Intrauterine growth restriction contributes to high rates of “runt” piglets, which have a lower survival rate after birth.

But there are other reasons that a species might synchronously reproduce. In one social group of banded mongoose, more than ...

"How do I check that it's not a hoax?" Ari Hodara, 58, said after organizers called him following the draw at a Paris auction ...