It is possible to lead a cow upstairs... but, not downstairs.
A duck's quack doesn't echo, and no one knows why.
Dentists have recommended that a toothbrush be kept at least six (6) feet away from a toilet to avoid airborne particles resulting from the flush.
Richard Millhouse Nixon was the first U.S. president whose name contains all the letters from the word "criminal." The second? William Jefferson Clinton
And the best for last... Turtles can breathe through their butts.