Dachshunds were bred with long bodies and short legs so they could dig into badger burrows and chase the animals underground. Their shape is basically a piece of hunting equipment, not just a cute design.
Inventor Elisha Gray filed paperwork for a similar telephone design at the patent office on the same day as Alexander Graham Bell, which led to years of legal fights.
The Golden Gate Bridge's famous "International Orange" color began as primer, but the architect liked how it blended with the landscape and stood out in fog.
George and Robert Stephenson's locomotive, the Rocket, won the 1829 Rainhill Trials and set the basic design for steam locomotives for the next 150 years.
The first jet-powered airplane to fly was Germany's Heinkel He 178 in 1939, though British engineer Frank Whittle had patented a jet engine design in 1930.