Original: Dolly ( July 5 , 1996 -- February 14 , 2003 ) , was a female domestic sheep remarkable in being the first mammal to be cloned from an adult somatic cell , using the process of nuclear transfer .
Simplified: Dolly ( July 5 , 1996 -- February 14 , 2003 ) , was a sheep remarkable in being the first mammal to be cloned from an adult somatic cell , using the process of nuclear transfer .