Many pet owners are unaware that mixing fats and carbohydrates in their pet’s diet can disrupt fat metabolism through a process known as the Randle Cycle. This metabolic conflict may contribute to obesity in dogs and cats, insulin resistance, canine and feline diabetes, and metabolic syndrome. Commercial pet foods, especially dry kibble and wet food, often contain high levels of starches, refined carbs, and cheap fats, which can impair the body’s ability to burn fat efficiently. Understanding how macronutrient balance affects glucose metabolism, fat storage, and energy production in dogs and cats is critical for improving long-term health. This video will explain why feeding your pet a combination of high fat and high carbohydrate ingredients may be wrecking their metabolism, and how switching to a species-appropriate diet—higher in protein, lower in processed carbs, and more focused on fresh food nutrition—can support weight loss, stable blood sugar, and overall metabolic health in both dogs and cats.