Animal-rights activists have been campaigning to shut down the horse meat industry. It turns out that zoos are the largest consumers of horse meat in the U.S. Zoos feed it to carnivorous animals such as lions since it is leaner and better matches their diet in the wild. As the horse meat suppliers gradually shut down some zoos have switched to beef and deer. The Oregon Zoo orders their meat from Canada. The majority of U.S. horse meat is actually shipped abroad.