Rare breeds of British cattle eat red clover.

Mad cow disease first appeared in the mid-1980's when British cattle began falling ill with a mysterious brain malady.

Even British cattle exported to other parts of Europe seemed suspiciously resistant to the disease.

Such diseases were considered exotic and rare until 10 years ago, when an outbreak occurred among British cattle.

The first case of Bovine spongiform encephalopathy is diagnosed in British cattle.

By the late eighteenth century there had been a remarkable increase in the average height of British cattle.

In the last 50 years new forces have determined the size of British cattle.

There are several characteristics of the breed that seem to set it apart from other British cattle, though appearances can be deceptive.

The British cattle have been dying from a nervous disorder, discovered in 1986, called bovine spongiform encephalopathy.

In addition to the actions in New York, 20 other states began ordering the killing of British cattle.