Dogs' Color Linked to How Long They Live
A study finds a dog’s color is linked to how long they live.
Research from the University of Sydney found the life expectancy of chocolate Labrador Retrievers is significantly lower than that of black and yellow labs. At the same time, chocolate Labradors had higher incidents of ear infections and skin disease.
Scientists used patient data of more than 33,000 UK-based Labradors. The lead author of the study said the findings warrant further investigation, but said the link may be due to the fact that the chocolate color is recessive in dogs. It must be present in both parents for their puppies to be chocolate, which means certain breeders of chocolate Labs may be more likely to breed only Labradors carrying the chocolate color gene, which may be resulting in a reduced gene pool that includes a higher proportion of genes that are conducive to ear and skin conditions.