captive bolt gun and bled to death. In countries with a less industrialized food-production system, horses and other animals are slaughtered individually outdoors as needed, in or near the village where they will be consumed. In 2005, the eight principal horse meat-producing countries produced over 700,000 tonnes of it. In 2005, the five biggest horse meat-consuming countries were China (421,000 tonnes), Mexico, Russia, Italy, and Kazakhstan (54,000 tonnes). In 2010, Mexico produced 140,000 tonnes, China 126,000 tonnes, and Kazakhstan 114,000 tonnes. As horses are relatively poor converters of grass and grain to meat compared to cattle, they are not usually bred or raised specifically for their meat. Instead, horses are slaughtered when their monetary value as riding or work animals is low, but their owners can still make money selling them for horse meat, for example in the routine export of the southern English ponies from the New Forest, Exmoor, and Dartmoor. British law requires the use of "equine passports" even for semiferal horses to enable traceability (also known as "provenance"), so most slaughtering is done in the UK before the meat is exported, meaning that the animals travel as carcasses rather than live. Ex-racehorses, riding horses, and other horses sold at auction may also enter the food chain; sometimes, these animals have been stolen or purchased under false pretenses. Even prestigious horses may end up in the slaughterhouse; the 1986 Kentucky Derby winner and 1987 Eclipse Award for Horse of the Year winner, Ferdinand, is believed to have been slaughtered in Japan, probably for pet food. A misconception exists that horses are commonly slaughtered for pet food. In many countries, such as the United States, horse meat was outlawed for use in pet food in the 1970s. American horse meat is considered a delicacy in Europe and Japan, and its cost is in line with veal, so it would be prohibitively expensive in many countries for pet food. Meat from horses that veterinarians have put down with a lethal injection is not suitable for human consumption, as the toxin remains in the meat; the carcasses of such animals are sometimes cremated (most other means of disposal are problematic, due to the toxin). Remains of euthanized animals can be rendered, which maintains the value of the skin, bones, fats, etc., for such purposes as fish food. This is commonly done for lab specimens (e.g., pigs) euthanized by injection. The amount