From a National Geographic story by Mollie Bloudoff-Indelicato, the quote of the week:
“I lift up the animal’s tail,” said Joanne Crawford, a wildlife ecologist at Southern Illinois University, “and I’m like, ‘Get down there, and stick your nose near its bum. People think I’m nuts,” she added. “I tell them, ‘Oh, but it’s beavers; it smells really good.’”
Crawford is talking about castoreum, a naturally occurring anal secretion found in beavers. The furry animals use it to mark their territory. We humans, however, have also found uses for castoreum. Most notably, as an ingredient in vanilla-flavored and vanilla-scented products.
Pictured: Hardened lumps of beaver anal secretions, as stored in the Deutsches Apothekenmuseum, Heidelberg Castle, Heidelberg, Germany. Photo by H. Zell via CC
Maggie Koerth-Baker is the science editor at BoingBoing.net. She writes a monthly column for The New York Times Magazine and is the author of Before the Lights Go Out, a book about electricity, infrastructure, and the future of energy. You can find Maggie on Twitter and Facebook.