Poison allegedly capable of killing dogs for food or revenge is being sold online.

According to a salesman surnamed Zhang, who placed an advert on Ganji.com - a national classified information website - his drugs cost 10 yuan a pill and only one is needed to kill a dog.

Zhang claimed the poison would only damage the head of a canine, leaving the body in perfect condition to be sold as food to restaurants. He wouldn't reveal what type of