Nazi Dogs Do Math, Crack Jokes

Nazi specialists attempted -- apparently with some success -- to train a fleet of "intelligent" dogs to read, write and speak.

The institute trained dogs such as Rolf the Airedale terrier, who was said to be able to discuss religion, contemplate complex mathematics and communicate with humans by tapping out an alphabet code using his paw.

Another dog, Kurwenal, supposedly cracked jokes like a comedian and was a symbol of the educated canines of Germany.