* 2003: The Roslyn Institute in Edinburgh, Scotland, announced that the cloned sheep Dolly had been put down at the age of 6 1/2 following the discovery that she had a lung tumor caused by a virus; Dolly was stuffed and put on display at the National Museum of Scotland, Edinburgh. | * 2003: The Roslyn Institute in Edinburgh, Scotland, announced that the cloned sheep Dolly had been put down at the age of 6 1/2 following the discovery that she had a lung tumor caused by a virus; Dolly was stuffed and put on display at the National Museum of Scotland, Edinburgh. |