The electric chair was invented by a dentist . . . .  Dr. Alfred P. Southwick (1826 – 1898) was a dentist from Buffalo, New York. He is credited with inventing the first electric chair as a method of execution. The chair was reportedly manufactured by employees of Thomas Edison.
Well, that’s a downer!  So here’s a bonus fact:
Did you know that a snail has about 25,000 teeth on its tongue?