Uncommon Descent had a link to this post, and I thought it was interesting as well:

The most famous example of biomimicry was the invention of Velcro brand fasteners. Invented in 1941 by Swiss engineer George de Mestral, who took the idea from the burrs that stuck tenaciously to his dog’s hair. Under the microscope he noted the tiny hooks on the end of the burr’s spines that caught anything with a loop – such as clothing, hair or animal fur. The 2-part Velcro fastener system uses strips or patches of a hooked material opposite strips or patches of a loose-looped weave of nylon that holds the hooks…

More… (source)

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