Nowadays society is deeply concerned with the safety issues, the flight safety in particular. Despite the technological progress, people can not do without dogs` assistance, as no device is capable of replacing the dogs` scent in search of explosive substances and drugs. Dogs are indispensable for differentiating between different individuals by specific smells. To work efficiently a dog needs excellent scent and ability to learn quickly. It is only in Russia that the unique animals -dog and jackal hybrids - have been bred for this purpose. This effort has been undertaken by Klim Sulimov, Senior Research Assistant, D.S. Likhachev Scientific Research Institute for Cultural Heritage and Environmental Protection.
However, why did the scientists come to the idea of breeding the hybrids? The matter is that wild jackals have a better sense of smell than any dog breeds. In the course of domestication animals have lost a lot of qualities needed for living at large. Along with that, it is hard to work with wild animals: they would never trust people completely and be as obedient as dogs. Besides, jackals endure cold weather pretty badly - unlike their congeners, they perspire from all the skin surface. So, hybridisation has appeared to be the only solution.
The scientists had to choose the dog breed best suited for the purpose. "We have chosen arctic dogs - reindeer herding husky, Sulimov told us. Northern dogs have better sense of smell than all other dog breeds, as huskies are used under severe conditions of arctic cold. Substances become non-volatile under low temperatures, that is why a sense of smell becomes keener." The reindeer herding huskies in the North of Russia help to graze reindeers.
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Physicists from the University of Würzburg are capable of generating identical looking single light particles at the push of a button. Two new studies now demonstrate the potential this method holds.
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