Did you Know
...that the amazing Swordtails can sometimes change from females to males? Swordtails first became aquarium fishes in about 1910. A few years later, it was reported that some females, after have several broods, had reversed sex - completely changing from females into fully functioning males!
...that Mastiff's were recruited as dogs of war during the Roman Empire as well as the Middle Ages? The Romans trained the courageous Mastiffs to fearlessly attack their enemies. During the Middle Ages, the Mastiff was sent into battle against mounted knights. Not entirely defenseless, the Mastiff was geared up with his own coat of armor. With a deadly iron spike set on his head and a cauldron of hot sulfur and resin placed on his back, the Mastiff was transformed into a fearsome warrior.
...It is a common belief that cats are color blind. However, recent research has shown that cats can see blue and green, and possibly red.