The Truth:

Raw egg whites contain avidin, an enzyme that destroys biotin, a B-complex vitamin, within the body. Biotin deficiencies can result in hair problems, skin lesions, diarrhea, and decreased litter size. Egg yolks, on the other paw, are very high in biotin. So should you feed your dog egg yolks without the whites? You can, but some experts consider the hazards of exposure to salmonella bacteria to be too much of a gamble, and not just to animals. “The risk of salmonella from raw eggs is real, however dogs are fairly resistant to it,” says Carole Brown, a Canadian veterinarian from British Columbia. “The greater risk is to the humans who would be handling the food. My personal opinion is if it ain’t broke, don’t fix it. If your dog has a healthy coat and is eating a good food, why would you want to supplement it?”