The humanity domesticated thousands of years ago wild wolves until they became your most faithful ally, who went from pets to being practically One more of the family. About 30,000 years of coevolution, one of the best-known cases of artificial selection of animal history. The material improvement of dog living conditions has led to the expansion of academic disciplines and the emergence of specialties such as veterinary medicine and its clinical aspect, as well as the industry focused on their care. A success that has also caused the way in which they die to change: cancer is the main cause of death among these companion animals.
