Concern over "mad cow" disease prompts the U.S. government to order the slaughter of hundreds of sheep in Vermont. Our health correspondent Dr. Emily Senay is here with the details. "Mad cow" disease ...

Norman, the Valais Blacknose Sheep, is quite the intrepid soul. He just loves going on all kinds of little adventures with his fellow Valais Blacknose Sheep friends. While a bunch of precious little ...

Researchers think they’ve solved one of the most enduring mysteries of a strange, always-fatal disease that turns both people and cows mad. In experiments with genetically manipulated mice, they found ...

For years, sheep have been the default grazing animal across Britain's uplands, quietly shaping the landscape without anyone ...

Since the evolution of dogs from wolves tens of thousands of years ago, they have been selectively bred for various roles as guards, hunters, workers and companions. But dogs are not the only animal ...