Crunchy, Wholesome Bites for All Your Adventures in Training. Training is an adventure — and a journey. To encourage your dog along the way, it’s important to use a right-sized treat. Zuke’s Crunchy Naturals 5-calorie dog treats are specially crafted in the USA using the Earth’s best ingredients — like wholefood berries and protein-rich peanut butter, plus vitamins and minerals — NO corn, wheat or soy. At only 5 calories, these crunchy, baked treats are a healthy, guilt-free reward or training treat for small- and medium-sized dogs. Formerly known as Skinny Bakes, different recipes are available in 2-calorie and 10-calorie varieties.