They Divide Themselves For Food
Otters need to eat a lot of food. It’s part of the reason we wish we were otters, so we could consume as much food as them without having to worry about our diet. “The otters, which need to consume 25 percent to 35 percent of their body weight every day to maintain their metabolism and keep themselves warm in the cool waters, are divided into three “dietary guilds”: Deep-diving otters that dine on abalone, urchins, and Dungeness crab; medium divers who subsist on clams, worms, and smaller shellfish; and those that stay in shallower waters, feeding on black snails.” They’re genius. To keep their species growing and thriving, they’ve figured out a system to divide themselves for the best survival strategies possible (Mental Floss).