Grizzly Pet Products - grizzlypetproducts.comGrizzly Pet Productsâ€™ Krill Oil is a powerful antioxidant supplement for pets, providing a safeguard against free radicals (unstable harmful molecules) that arise during normal digestion. It is extremely concentratedâ€”a 4-oz. bottle will last a 50 lb. dog approximately two months, and an 8-oz. bottle is sufficient for up to four months. Both the 4- and 8-oz. bottles are packaged in a pump dispenser bottle for easy use. In keeping with the companyâ€™s commitment to wild sources, Grizzly Krill Oil is sustainably harvested from Antarctica and certified by the World Wildlife Fund.