Whole duck eggs with shells. Duck eggs are a good source of Vitamins A, B1, B2, B5, B9 (Folate), B12, E, Iron, Phosphorus, Zinc, Selenium and Choline. Choline is an essential nutrient that helps the body’s cells communicate. It helps create neurotransmitters that facilitate nerve communication. Duck eggs have more Omega-3 fatty cells than in chicken eggs. Omega-3 fatty cells are believed to help dogs with skin conditions, heart health, kidney health, cognitive function, and arthritis issues. Each sample bag contains 0.6 oz of dehydrated duck eggs. Each reusable jar contains 2 oz of dehydrated duck eggs. Each refill bag contains 6 oz of dehydrated duck eggs. 0.58 oz is about 1 whole fresh duck egg. 1 tsp is about 1/4 whole fresh duck egg. Feeding recommendation: 1 tsp for every 20lb. Use as meal topper. Combine with yogurt, kefir or goat's milk for a fun DIY pet-safe snack.