- Kittens are born blue-eyed. If their eyes change colors, it generally occurs at four to five weeks of age.

 - The very first bomb dropped by the Allies on Berlin during WWII killed the only elephant in the Berlin Zoo.

 - Sir Isaac Newton invented the cat door.

 - A father Emperor penguin withstands the Antarctic cold for 60 days or more to protect his eggs, which he keeps on his feet, covered with a feathered flap. During this entire time he doesn't eat a thing. Most father penguins lose about 25 pounds while they wait for their babies to hatch. Afterward, t

 - Ticks are second only to the mosquito as the most dangerous parasites to humans.