主播大秀

David Cameron says the discovery of horse meat in some supermarket beefburgers is "disturbing". Now scientists say we should think twice before dropping live crabs into the cooking pot, because of new evidence that they do feel pain.

Do some animals deserve to be treated better than others? We're happy eating cows or pigs - are we hypocrites for treating horses differently?

Are there good reasons why some are fit for hunting, working, and eating - and others are mollycoddled?

Nicky Campbell takes your calls.