A mud puddle started moving across the California desert, and no one knows why. So I visited the mud spring to find out how a puddle became declared a natural disaster. | Physics Girl

The mud wallow is where it's at 🦏 Every clever rhino knows that the best way to keep cool during the summer is diving headfirst into a good old fashioned puddle. Not only does mud help these chubby unicorns beat the heat, but it protects them from insect bites and damaging UV rays. #muddybuddies #rhinos #chubbyunicorns #sdzsafaripark | San Diego Zoo Safari Park