Rascal has chronically dry skin/fur - nothing devastating, but never that soft shine like I would like to see, and dandruff problems in winter.
I tried fish-based kibbles, I tried fish oil, I tried fish oil and vitamin E, I tried salmon oil, I tried cooked eggs, I tried raw eggs, I tried sardines. Nothing seemed to work at all.
Finally I found my miracle product - canned calmon! Either cans from the store, or Wellness makes a line of kibble toppers - "95% Salmon" or something that is also excellent. A half teaspoon or so of canned salmon in his kibble once or twice a day, and 2 weeks later Rascal's coat is noticeably softer! It's amazing!
So salmon oil didn't work, but salmon meat did. Go figure!
Just thought I'd share my discovery, in case anyone else is contemplating some canned salmon kibble toppers :)
P.S. - It makes Rascal's breath smell like poo, but he gobbles it up quite enthusiastically.