Crunchy, Wholesome Bites for All Your Adventures in Training. Training is an adventure Ñ and a journey. To encourage your dog along the way, itÕs important to use a right-sized treat. ZukeÕs Crunchy Naturals 5-calorie dog treats are specially crafted in the USA using the EarthÕs best ingredients Ñ like wholefood berries and protein-rich peanut butter, plus vitamins and minerals Ñ 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.