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).
...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 the largest litter of puppies on record is 23? The record is shared by three bitches of different breeds - an American Foxhound, St. Bernard and a Great Dane. Each whelped 23 puppies in one litter.