Mark Purdey animal feed dates back to at least 1926. In the 1970s attention was directed within MAFF to the danger that this practice would result in the spread of infectious diseases. The diseases considered were those caused by conventional viral and bacterial organisms. No consideration appears to have been given to the risk that scrapie might be recycled in sheep, or even transmitted to other farm animals. This may seem surprising. The answer probably lies in the fact that half a century had elapsed without any indication that animal feed containing ovine protein was infecting sheep or any other animal." Purdey
Animal Cops following: The Animal Cops series inspired the formation of a 500-strong animal police force (), with full law-enforcement powers in the Netherlands, as agreed by the Dutch government coalition which formed in 2010. The first Dutch animal cops were officially certified on December 2, 2011 by the Security and Justice minister Ivo Opstelten. The Party for the Animals criticized the plan because the animal cops are only allowed to investigate the abuse of pets, not the abuse of farm animals. For the same reason, the Dutch animal cops are sometimes mockingly called the "guinea pig police" (). Animal Cops Animal