Imagine waking up in the morning to a miniature hippopotamus jumping around and squealing with delight at the simple sight of your face. That’s apparently what it’s like to live with a hairless guinea ...

It’s a drizzly, overcast day at Cheyenne Mountain Zoo, but that won’t stop a muddle of guinea pigs from their feast. “Piggies!” calls out Courtney Rogers, senior animal keeper in the Water’s Edge: ...