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• Cloud - Dimanche 6 Janvier 2013 11:29

  get a mixed they are healthier.All the setiniifcc studies in this area have found that the average mutt is healthier and will live longer than the average purebred. Here are a few references: 1) B.N. Bonnett, A. Egenvall, P. Olson, . Hedhammar, Mortality in Swedish dogs: rates and causes of death in various breeds, The Veterinary Record, 12/7/1997, S. 40 44)"Mongrels were consistently in the low risk category" (S.41)2) P.D. McGreevy & W.F. Nicholas, Some Practical Solutions to Welfare Problems in Pedigree Dog Breeding, Animal Welfare, 1999, Vol 8, 329-331"Hybrids have a far lower chance of exhibiting the disorders that are common with the parental breeds. Their genetic health will be substantially higher." (P338) 3) A. Egenvall, B.N. Bonnett, P. Olson, . Hedhammar,Gender, age, breed and distribution of morbidity and mortality in insured dogs in Sweden during 1995 and 1996, The Veterinary Record, 29/4/2000, p. 519-57"Mongrel dogs are less prone to many diseases then the average purebred dog." (S. 524)4) R. Beythien, Tierarten- und Hunderassenverteilung, Erkrankungshufigkeit und prophylaktische Manahmen bei den hufigsten Hunderassen am Beispiel einer Tierarztpraxis in Bielefeld in den Jahren 1983-1985 und 1990-1992, 1998, Diss., Tierrztl. Hochschule HannoverMongrels require less veterinary treatment5) A. R. Michell, Longevity of British breeds of dog and its relationship with sex, size, cardiovascular variables and disease, Vet. Rec., 27 Nov. 1999, S. 625-629"There was a significant correlation between body weight and longevity. Crossbreeds lived longer than average but several pure breeds lived longer than cross breeds, notably Jack Russell, miniature poodles and whippets" (S. 627 thus only small and toy breeds, as to be expected)6) G.J. Patronek, D.J. Walters, L.T. Glickman, Comparative Longevity of Pet Dogs and Humans: Implications for Gerontology Research, J. Geront., BIOLOGICAL SCIENCES, 1997, Vol 52A,No.3, B171-B178"The median age at death was 8,5 years for all mixed breed dogs and 6,7 years for all pure breed dogs For each weight group, the age at death of pure breed dogs was significantly less than for mixed breed dogs." (p. B173) 7) H.F. Proschofsky et al, Mortality of purebred and mixed breed dogs in Denmark, Preventive Veterinary Medicine, 2003, 58, 53-74Higher average longevity of mixed breed dogs (grouped together). Age at death mixed breeds (Q1 Q2 Q3 mixed breeds 8,11,13, purebreds 6, 10, 12)I've yet to find any research that shows otherwise.References : byber