You should give your dog fat trimmed from animals in limited amounts. (platpets.com)
For example I could not find any meat that was not lean or fat trimmed in that particular tracker when I tried to test it out. (perfecthealthdiet.com)
This can be accomplished by feeding a high fat diet, such as a rich canned dog food or a small amount of fat trimmings from meats (often available at the meat departments of local grocery stores upon request of the butcher), or by allowing the dog to drink some rich cream. (chai-online.org)