When I was living in Chicago, my landlady had a wonderful golden retriever that was incredibly friendly, smart and fun to play with - but he had one ridiculous habit: he liked to eat his own poop.

It’s not uncommon for a dog to sniff around a yard, come across a pile of poop, and gobble it up. Or even to eat its own poop. It might sound quite disgusting, but lots of dogs will eat poop at some ...

While poop is decidedly not on the menu for us humans, it’s a normal food for many animals. In one study in Tanzania, scientists remarked that hooded vultures showed more interest in protein-rich lion ...