What was the first animal to be successfully cloned?
The first animal to be successfully cloned was a tadpole, all the way back in 1952. Several other creatures were cloned after this feat, but the most memorable in the popular imagination was Dolly, the sheep cloned from a cell taken from an adult sheep in a Scottish laboratory in 1996. This was a first, as was the fact that Dolly was a mammal. The scientists that cloned Dolly tried 277 udder cells from "parent" sheep, but only one was successful. While cloning of animals had been going on for almost half a century, the case of "Dolly" received the most attention, and raised many questions about the possibility and the ethics of human cloning.