More people are killed annually by donkeys than die in air crashes. Certain frogs can be frozen solid, then thawed, and survive. Cat's urine glows under a blacklight. An ostrich's eye is bigger that its brain. To escape the grip of a crocodile's jaws, push your thumbs into its eyeballs - it will let you go instantly.
All porcupines float in water.
If you toss a penny 10000 times, it will not be heads 5000 times, but more like 4950. The heads picture weighs more, so it ends up on the bottom. Babies are born without kneecaps. They do not appear until the child reaches 2-6 years of age. In every episode of Seinfeld, there is a Superman somewhere.