![San Diego Zoo Wildlife Alliance on Twitter: "#AnimalFact Hippo sweat is red. http://t.co/D1SJsoIf3r" / Twitter San Diego Zoo Wildlife Alliance on Twitter: "#AnimalFact Hippo sweat is red. http://t.co/D1SJsoIf3r" / Twitter](https://pbs.twimg.com/media/BrQqEl-IUAAmk0Y.jpg)
San Diego Zoo Wildlife Alliance on Twitter: "#AnimalFact Hippo sweat is red. http://t.co/D1SJsoIf3r" / Twitter
![Lake Naivasha Resort (LNR) på Twitter: "Do Hippos sweat blood? Not really. The oily red substance they secret is a moistener and sunblock. Be sure to check out some more Hippo stories Lake Naivasha Resort (LNR) på Twitter: "Do Hippos sweat blood? Not really. The oily red substance they secret is a moistener and sunblock. Be sure to check out some more Hippo stories](https://pbs.twimg.com/media/DwjJMBxXcAAmiZ6.png)
Lake Naivasha Resort (LNR) på Twitter: "Do Hippos sweat blood? Not really. The oily red substance they secret is a moistener and sunblock. Be sure to check out some more Hippo stories
![Fact Maniac 在Twitter 上:"Hippos secrete a reddish oily fluid sometimes called “blood sweat” from special glands in their skin when exposed to full sunlight. 💦 #FactManiac https://t.co/raCTXILtIm" / Twitter Fact Maniac 在Twitter 上:"Hippos secrete a reddish oily fluid sometimes called “blood sweat” from special glands in their skin when exposed to full sunlight. 💦 #FactManiac https://t.co/raCTXILtIm" / Twitter](https://pbs.twimg.com/media/DXP47DOWkAApR3u.jpg)