The first animal cloned from an adult cell is Dolly the sheep. Born in 1996 at the Roslin Institute in Scotland, Dolly was the first mammal to be cloned using somatic cell nuclear transfer (SCNT), a technique where the nucleus of an adult cell is transferred into an egg cell from which the nucleus has been removed. This groundbreaking achievement provided insight into genetic manipulation and cloning, leading to advancements in reproductive technology and medicine. Dolly's cloning raised ethical questions and discussions about the implications of cloning in animals and humans, influencing biotechnology and genetic research for years to come until her death in 2003.