Hippopotamuses can eat nearly 100 pounds of food daily—and, as a result, they fill the pools where they spend much of their lives with huge amounts of poop. All that excrement, new research has found, ...

Scientists are rethinking defecation as a universal trait after studies showed several animals digest food without producing faeces. Species such as sponges, jellyfish, flatworms, tardigrades, and ...

Every dog owner is probably familiar with this behavior: you take your dog out for a potty break, and before it does its business, it turns around in circles several times. But what is the explanation ...