Naval heraldry. Naval heraldry is a form of identification used by naval vessels from the end of the 19th century onwards, after distinguishing features such as figureheads and gilding were discouraged or banned by several navies.
A pair of new-born cloned calves in a cowshed in Ishikawa Japan, on July 5 1998. They were born exactly two years after Dolly, the British sheep that made history by becoming the first clone of an adult animal. They are the second adult-animal clones, and were produced by a similar technique.
The first real organ transplants were probably skin grafts that may have been done in India as early as the second century B.C. The first heart transplant in any animal is credited to Vladimer Demikhov. Working in Moscow in 1946, Demikhov switched the hearts between two dogs. The dogs survived the surgery.