Some animals whisper their way through the wild. Zebras don't. They show up in high-contrast stripes, act like it's the most practical outfit ever invented—and somehow, it is. International Zebra Day, celebrated on January 31, gives these black-and-white originals their moment to step out of the herd and into the spotlight.

These African equines come in three species. Plains zebras—featured in today's image from Namibia's Etosha National Park—wear bold stripes, mountain ones sport pinstripes and Grévy's go for the ultra-fine, designer look. No two patterns match, turning every individual into a walking fingerprint. Scientists believe those stripes help confuse predators, deter biting flies and even cool the body by creating tiny air currents.

Watch a herd—technically called a dazzle—and you'll see how social they are. They groom one another, babysit foals and communicate through brays and barks. Foals recognise their mothers by memorising patterns within hours of birth. These mammals are built for speed—up to 40 mph—and teamwork, forming tight circles when threatened. However, shrinking habitats, poaching and competition with livestock continue to threaten them, making this day essential for raising awareness.