Tracking health threats...with otter poop? North American #riverotters have some of the worst food hygiene on the planet. They eat, play and poop in the same spots—called "latrines. Because of that, they're frequently exposed to new threats in the environment, like parasites, pollution or diseases. And thanks to their latrines, scientists can study their poop as an early warning sign to detect things that could impact humans. In a new study, SERC biologists Calli Wise and Dr. Katrina Lohan colle