Who? A group of researchers led by Professor Paul McGreevy of the Faculty of Sciences at the University of Sydney.
What’s new? A study of more than 33,000 Labradors of all colors found that chocolate-colored dogs are much more prone to ear infections and skin diseases than golden and black Labs, and their lives are 10% shorter.
Why? A recessive gene is responsible for the chocolate color. Dog breeders tend to cross two chocolate-colored dogs to obtain chocolate puppies, which can reduce genetic diversity and increase the frequency of genes linked to diseases, in this case, diseases of the ears and skin.
More information: The study was recently published in the scientific journal,
Canine Genetics and Epidemiology.