This is the serotonin boost we all need.

Add Yahoo as a preferred source to see more of our stories on Google. There are cute baby animals, and then there are the ones who hit a whole different level of sweetness that makes you clutch your ...

(CNN) — One of the best things that can happen to a zoo or aquarium is for one of their resident animals to go viral. Just look at the multi-hour-long lines to see Moo Deng, a pygmy hippo in Thailand ...

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 ...