In reply to Asher Collins:
Whilst I too think the introduction of Diclofenac in Europe is a bad thing (mainly because of the 'double standards' message it sends to the third world), there are some very important differences that mean it probably won't cause the same issue here that it does in India.
Firstly, in Spain and Italy there are EU regulations that require incineration of animal carcasses.
Dead cattle aren't left lying around for the vultures to eat in the same way they routinely are in India.
Secondly, the sort of livestock that do end up lying dead on a hillside (think of the equivalents of sheep and ponies in the Carneddau) won't be ones that someone has spent lots of money on painkillers for (Diclofenac will mainly be used for pneumonia and mastitis in closely monitored production animals, or as a longer term arthritis treatment in 'pet' horses).
In India the problem arises mainly because of the religious issues around 'sacred' cows, which cannot be slaughtered and so have to be kept alive (with long term painkillers such as Diclofenac or Meloxicam if necessary) as long as possible and as they are often not owned and allowed to wander the carcasses usually end up consumed by vultures.