5 Astounding Facts You Never Knew About Dogs

Dogs' noses are as unique as human fingerprints, with some organizations using nose prints to identify lost dogs.

Dogs have three eyelids, including a nictitating membrane that helps protect and moisturize their eyes.

The Basenji dog doesn't bark but makes a unique yodel-like sound called a "barroo."

Greyhounds can outpace cheetahs in long-distance runs, maintaining speed longer than cheetahs can.

Some dogs can sense weather changes, detecting barometric pressure shifts or infrasound from distant thunder.