On 22 February 1997 scientists at the Roslin Institute, Scotland announced that they had cloned an adult mammal, producing Dolly the sheep, born on 5 July 1996.

Dolly was the first cloned mammal ever to be created from an adult cell. She was named after the famous Country singer Dolly Parton.

Many thought that cloning of mammals was impossible but the Roslin Institute research team including  Keith Campbell and Ian Wilmut, proved all the doubters wrong.

Dolly spent her whole life living in a flock of sheep at the Roslin Institute. She had six lambs with a Welsh Mountain sheep named David. Their first lamb, Bonny, was born in the spring of 1998. Twins, Sally and Rosie, followed the next year and triplets, Lucy, Darcy, and Cotton, the year after that. – National Museum of Scotland.

Dolly  was put to sleep at the age of six after a tumour was found growing in her chest. Dolly was donated to National Museums Scotland by the Roslin Institute. She has been on display at the National Museum of Scotland since 2003.