By Nature offers Active Defense, a line of dog and cat foods specially formulated to help protect the health of pets. Active Defense+ Grain-Free and Balanced Diet dry foods and Grain-Free dog treats are now available at select pet retailers in the US and online. Wet foods are coming soon. Active Defense+ premium and superpremium foods combine advanced dietary science and nature's best ingredients to deliver a new level of nutrition for pets, according to the company. All Active Defense+ products offer SuperFusion Advanced Nutritional Blend, a combination of high-quality proteins for strong muscles, antioxidant-rich superfoods for immune system support and prebiotic fibers to support healthy digestion. Active Defense+ products are formulated for all breeds and life stages, and provide dogs and cats with the nutrition they need. Grain-free recipes are ideal for pets with sensitivities to grains, while Balanced Diet recipes offer high-quality proteins, whole grains, and nutritious fruits and vegetables. Grain-free dog treats, certified USA Country of Origin products, offer a healthy boost between meals. All Active Defense+ dry foods and treats are made in the USA, says By Nature.