Cute features in babies and animals are more than just amusing—they trigger powerful evolutionary responses that help our species’ survival. Moo Deng, the baby pygmy hippo that has become famous ...

Tula-Tu, the elephant calf born earlier this month, is undeniably cute. But she isn’t the first baby animal to cause visitors to Portland’s zoo to audibly say, “Awwwwww.” Here are 12 sweet animal ...