A dog's burying instinct comes courtesy of its wild ancestor, the gray wolf.
Life's Little Mysteries answers fascinating questions about the world around you and the stuff in it, including wild questions you didn't even know you had.
And check out our "Life's Little Mysteries" podcast, where we answer questions about mysteries big and small — about ancient civilizations; our planet and solar system; the plants and animals that live alongside us; our bodies and how they work; and more. Listen in on Apple podcasts, Spotify and Audioboom.
The first fax machine used telegraph lines and was patented 33 years before Alexander Graham Bell's famous first phone call.