InstinctÂ® Instinct Healthy Weight food is grain-free and gluten-free. Available in kibble and cans, it will satisfy your pet’s carnivorous cravings and nutritional needs while helping them lose or maintain weight. Instinct Healthy Weight brings you grain-free kibble with less fat and fewer calories. Plus it has added Raw Boost â pure, delicious, and fully satisfying freeze dried raw pieces. Together, the kibble plus raw gives your pet a healthy diet that is highly nutritious and fully satisfying. Instinct Healthy Weight is also available in reduced calorie canned foods for dogs and cats.