Finding a partner and sticking with them for life isn’t all that common in the animal world, but a few species really commit.

The Lion King got one thing right: love is in the air on the savanna. From the birds perched in the trees to the foxes curled in their den, plenty of these grassland creatures are monogamous and mate ...

Thomas White receives funding from the Hermon Slade foundation and the Australian Research Council. Reproduction is the ultimate goal in life for most animals, but securing a mate is hard work. You ...

Tim Janicke, Lucas Marie-Orleach, Thomas G. Aubier, Charles Perrier, Edward H. Morrow, Roger K. Butlin and Alice A. Winn Evolutionary theory predicts that positive assortative mating—the tendency of ...

When I met Nikita, the majestic, golden-eyed female Amur tiger at the National Zoo in D.C., she might have been pregnant. (We should know any day now; her cubs would be due in June.) But she had never ...