Carbohydrates for Dogs: A Complete Guide

What are carbohydrates?

Carbohydrates are essential biomolecules made of carbon, hydrogen and oxygen that serve as the primary energy source for the human body, and a secondary source of energy for dogs. They are one of the three main macronutrients, alongside proteins and fats.

When consumed, your dog’s digestive system breaks carbohydrates down into glucose (blood sugar), which fuels its cells, tissues and organs.

What are the health benefits of feeding dogs carbohydrates?

While dogs have no strict evolutionary requirement for carbohydrates, incorporating high-quality carbs into their diet provides vital metabolic, digestive and cellular health benefits. They act as a functional ingredient that transforms a basic meat diet into a balanced, health-boosting regimen.

Immediate cellular energy

• Glucose supply: carbs break down into glucose, the primary fuel for the brain, nervous system, and red blood cells.
• Glycogen storage: excess glucose is stored in the liver and muscles as glycogen, providing fast-acting stamina for playing, running and working.
• Protein sparing: when carbs provide energy, your dog’s body can use dietary protein exclusively for muscle repair and tissue growth instead of burning it for fuel.

Gastrointestinal and gut health

• Microbiome support: complex carbs contain prebiotic fibres (like those in oats or chicory root) that feed beneficial gut bacteria.
• Stool regulation: beet pulp, pumpkin and miscanthus grass provide soluble and insoluble fibres that optimise intestinal transit and stool consistency.
• Colon health: fermentable fibres regulate pH within the colon, protecting your dog against harmful bacterial overgrowth.

Weight management and fullness

• Calorie dilution: carbs contain less than half the calories of fat per gram, making it easier to formulate low-calorie diets for weight loss.
• Hunger prevention: dietary fibre expands in the stomach, promoting a lasting feeling of fullness (satiation) to stop begging behaviour.

Vital nutrients and disease management

• Antioxidant boost: whole carbohydrate sources like sweet potatoes, carrots, and blueberries supply essential vitamins (A, C, K) and antioxidants that fight cellular inflammation.
• Organ support: substituting a portion of protein or fat with complex carbs is highly beneficial for managing specific canine health conditions like pancreatitis, kidney issues or diabetes.

So while it may be correctly argued that dogs have no strict requirement for carbs in their diet, there are a great many good reasons for including them in your dog’s homemade diet!

Safety guidelines

While there is no official minimum requirement for carbohydrates in canine nutrition, dogs can safely digest them. However, safely feeding carbs to dogs does require attention to preparation, carbohydrate types and underlying health conditions.

Cooking and preparation

• Always cook starch: raw starch causes severe gastrointestinal distress. Cooking modifies starch structure to exceed 90% digestibility.
• Mechanically break down: finely chop, mash or puree cooked vegetables to help your dog better absorb the nutrients.

Glycaemic index and health status

• Avoid simple sugars: simple sugars cause extreme postprandial insulin and blood glucose spikes.
• Manage special conditions: use complex carbohydrates and fibre for diabetic dogs to prevent blood sugar spikes.
• Restrict carbs for cancer: consider a low-carbohydrate, higher-protein diet if your dog has cancer as cancer cells utilise glucose for energy.
• Limit high-glycaemic foods: reduce or eliminate white rice and white potatoes for sedentary, obese or diabetic dogs.