Did you Know

...that an Old English Mastiff holds the record for being the heaviest dog? In 1989, "Zorba", a Mastiff in London, weighed 155.58 kg (343 lbs).

...Most domestic dogs are capable of reaching speeds of 32 kms per hour when running flat out but the members of the greyhound family may reach speeds up to 70 kms per hour.

...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!