347K views · 4.2K reactions | The mystery of why dogs circle before pooping has been solved. | Sunday Roast | Facebook

438K views · 1.6K reactions | To survive, koala joeys eat a special kind of poop produced by their moms—pap—which helps them digest eucalyptus leaves. It may sound off-putting, but it’s a life-saving precaution. Curious which other animals do it too and why? Find out: https://on.natgeo.com/45lBP7F #Underdogs, narrated by Ryan Reynolds, premieres Sunday, June 15 at 9/8c on National Geographic TV, simulcast on ABC. Streaming next day on Disney+ and Hulu. | National Geographic | Facebook

583K views · 5.6K reactions | Toilet paper is a relatively recent invention, and most of the world doesn’t use it. | Sunday Roast | Facebook

While it might seem unwise to consume feces, new research suggests that taking poop into the body in other ways might actually benefit our health. So, how does this work? Dig into the science of fecal microbial transplants: | TED-Ed