In one of the recent articles at huffingtonpost that was titled 'Scariest Science Experiments Ever, From Bat Bombs to Zombie dogs,' there is a mention of a deadly experiment on dogs by a Russian scientist. A macabre video of this experiment which was conducted in 1940 was released that showed severed dog heads which were kept alive for several hours. This was the first time that experiments on zombie dogs were conducted. Then, in 2005, another pack of zombie dogs were created by Americans. In both these experiments, the dog heads were kept alive by an artificial blood circulation system. Sometime after the blood transfusions and electric shocks, these dogs were also resurrected in the American experiment. It is said that someday this treatment will be used to revive people who are hemorrhaging blood too quickly.