Dolly the SHEEP was the first mammal to be successfully cloned from an adult somatic cell, using the process of nuclear transfer. She was born on July 5, 1996, and lived until February 14, 2003. Dolly was a female domestic SHEEP, and her birth marked a milestone in science as she was the first animal to be cloned from an adult cell. Her existence generated much debate and discussion about the ethical implications of cloning.