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Scientists Who Cloned Dolly the Sheep Plan to Clone Endangered Wildcats Using Eggs From Spayed Pets

• Rebecca Boyle via

One of the scientists responsible for cloning Dolly the sheep 15 years ago is developing a new cloning technique that he believes could help save endangered species. The work would initially benefit the Scottish wildcat, a relative of the domestic cat that lives in the woods of the Scottish Highlands. But if it works, it could be a new way to clone several kinds of animals.

The Scottish wildcat, Felis silvestris silvestris, is related to other species of wildcats in Europe, but has been wiped out in England and Wales. Only about 400 animals remain, according to researchers at the Edinburgh Science Triangle. Researchers believe the cats could be extinct by 2050. The purity of their gene pool is threatened by interbreeding with feral domestic cats, which has sparked an effort to spray the cats for free. It turns out that this hybridization could actually be the wildcats’ salvation, according to embryologist Bill Ritchie.

Eggs from the spayed cats could be the starting material for the new cloning process, according to Ritchie.

He would identify pure-bred wildcats through genetic testing, and then take a skin sample and culture some cells. The cells would be used to clone the animals, using the feral cat eggs as a host. The spaying program, which is taking place in the Eastern Cairngorms, would be a good source of lots of eggs, Ritchie said.

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