IVE USED 3,6,AND 9 FOR A LONG LONG TIME FOR THE DOGS WOULD DEFO RECOMEND IT . I GET A 5 LITRE TUB FOR 11 POUND. MADE BY NAF PREMIUM SUPPLEMENTS, FOR HORSES, AGAIN A LOT CHEAPER THAN IF YOU BY FOR DOGS. RANG COMPANY AND THEY GAVE EXACT CONTENT OMEGA 3 ,39% 6 IS 39% AND9 AND 12 ,22%. THE MORE YOU LEARN ABAUT NUTRITION THE MORE WE GET OUT OF THE DOGS.