Earthz Pet Dog Vitality Gravy for Medium/Large dogs in the flavour Hearty Beef is a pet supplement made with premium New Zealand ingredients including Hoki Fish Oil, Kiwi fruit, Manuka Honey and Green-Lipped Mussel. Each pack comes with 5x50ml bottles in recyclable packaging. Also available in 35ml sizes for Toy/Small dogs.ck comes with 25x50ml bottles in recyclable packaging. Also available in 35ml sizes for Toy/Small dogs.