Velcro exists because a dog got covered in burrs.

In 1941, Swiss engineer George de Mestral took his dog for a walk in the Alps and came home with a problem: the animal was plastered in burdock burrs. Most people would have spent ten minutes grumbling and gone on with their lives. De Mestral put the burrs under a microscope.

What he saw was not chaos — it was engineering. Each burr was covered in tiny, stiff hooks that latched onto the loops of fabric or fur with almost mechanical precision. The natural world had already solved a fastening problem that hadn't even been formally posed yet.

De Mestral spent the next decade turning that observation into a product. The name came from the French words velours (velvet) and crochet (hook). By 1955, he had a patent and a material that NASA would later use on space suits and surgeons would find useful in operating rooms.

The dog, for its part, received no royalties.