ZiwiPeak: an air-dried recipe with 96% lamb and liver, organs, bone, and New Zealand green mussels, ethically sourced and free of grains, fillers, and artificial additives. ZiwiPeak: an air-dried recipe with 96% lamb and liver, organs, bone, and New Zealand green mussels, ethically sourced and free of grains, fillers, and artificial additives. Ziwipeak treat for dogs and cats. Treat type: Freeze Dried. Available flavors: Lamb. Available sizes: 3oz.