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Hippos, Horses Sweat ... and More Smelly Secrets

Hippo sweat is red, horse sweat works like detergent, plus more details on sweat that you probably never knew.

| Wikimedia Commons
| Richard Bartz, Wikimedia Commons
| Wikimedia Commons
Lennart Goosens, Wikimedia Commons
Getty Images
| Wikimedia Commons
| Terry Goss, Wikimedia Commons
| Wikimedia Commons
| Thomas Vogel/Getty Images