カバの汗はピンク色！
Hippos are amazing animals with a very special trait ? they sweat pink! This pink sweat is not really blood, but it looks like it. The liquid helps protect their skin from the sun and bacteria. That’s why hippos don’t get sunburn even though they spend a lot of time in the sun. Scientists call this pink liquid “blood sweat,” but it’s just a nickname. It’s really a helpful kind of sunscreen and germ killer made by the hippo’s body.
