February 22: The first cloned mammal Dolly was anounced (1997)

Remains of Dolly

Ian Wilmut, Keith Campbell and colleagues at the Roslin Institute and PPL Therapeutics near Edinburgh, Scotland, has successfully cloned adult female sheep named Dolly. She was the first mammal cloned from an adult somatic cell. She was born on July 5, 1996 and her existence was announced on February 22, 1997. Dolly died with a progressive lung disease at her age of six on February 14, 2003.