When the Houston Zoo recently introduced Kirby, its newborn Asian elephant, questions abounded online about the wide-eyed baby elephant's ... and her big sister, Joy, before meeting the rest ...

Along with their big eyes, which help them see in low light, bush babies are adapted to nocturnal living with their large, collapsible ears that rotate independently like radar dishes to zero in ...

It seems a little unfair. The ladies love blue eyes, and babies already have a cuteness advantage. The iris is the muscular ring around the pupil. And its color depends on a protein called melanin ...