An ethical debate on cloning has been brewing ever since Dolly the sheep was produced in 1997.

CNN: Call for ban on human cloning

Jean-Marc has been up on these tilted, boulder-strewn pastures since 5am, milking 250 sheep in the company of a trainee shepherd from Brittany.

BBC: France and Spain��s centuries-old celebration of peace

In the more than three years since scientists in Britain cloned the sheep Dolly, other researchers have successfully cloned sheep, cows, goats, pigs and mice.

CNN: U.S. lawmakers debate limits on human cloning

The most feared cat in Wales, the alleged killer puma is said to have mutilated 50 sheep in Pontrhydfendigaid, near Aberystwyth, since 1995.

BBC: Catalogue of Wales' weird cats

Over the past 20 years biologists studying this primitive breed, which has not changed much since the Bronze Age, have noticed that the sheep are getting smaller.

ECONOMIST: Evolution and climate change