How Diet Affects Your Dog’s Skin and Digestion

Signs, Solutions & Common Problems

Your dog’s skin and digestive health are closely connected, and both rely heavily on what’s in their food bowl. From itching and scratching to digestive upsets like diarrhoea or constipation, the right diet can help support their overall wellbeing and protect them from discomfort. But how exactly does your dog’s food affect their skin and digestion, and what should you be looking out for?

The Role of Skin in Your Dog’s Health

Skin is your dog’s largest organ, making up around 12% of their body weight. It acts as a protective barrier against external threats (parasites, allergens, and irritants) and plays a key role in temperature regulation and hydration.

Their coat and skin need a steady supply of high-quality nutrients to stay strong and resilient. Without proper support, your dog may experience:

Itching and scratching

Redness or inflammation

Dandruff or dry, flaky skin

Excessive hair shedding or dull coat

Skin infections or hotspots

Some breeds are more prone to dermatological issues than others. Dogs with folded skin (e.g. Bulldogs, Pugs), long-haired breeds (e.g. Shih Tzus, Miniature Schnauzers), and even active medium or large breeds exposed to harsh outdoor environments may need additional skin support through tailored nutrition.

How Diet Influences Your Dog’s Digestion

Protein:
Protein is vital for muscle repair, immune function, and healthy skin. For dogs with digestive sensitivities, highly digestible protein sources are essential to avoid putting unnecessary strain on the gut. In some cases, food intolerances may require novel proteins or hydrolysed protein diets.

Fibre:
Balanced levels of fibre can help regulate bowel movements and improve stool quality. Fibre also supports beneficial bacteria in the gut and helps your dog feel fuller for longer.

Prebiotics:
These non-digestible fibres promote the growth of healthy gut bacteria and help stabilise your dog’s digestive flora, improving both stool consistency and immune support.

Fat:
Fats provide a concentrated energy source and essential fatty acids, which are crucial for skin and coat health. However, excessive fat can be difficult to digest, so it’s important to choose the right fat content for your dog’s size, breed and activity level.

Carbohydrates:
Easily digestible carbohydrates like rice can provide a gentle energy source for sensitive stomachs without triggering inflammation or upset.

How Breed Size Affects Skin and Digestive Sensitivities

Your dog’s breed size plays a major role in their nutritional needs:

Choosing breed-appropriate food is key to supporting digestion and maintaining healthy skin across all sizes.

How Your Dog’s Diet Supports Skin Health

Your dog’s skin and coat rely on a mix of specific nutrients:

A lack of any of these can result in dryness, irritation, and poor coat quality.

Spotting the Signs of Food Allergies or Sensitivities

Some dogs may suffer from allergies or intolerances to common food components, including:

Certain animal proteins
Grains or gluten
Histamines in foods like tomatoes or spinach

Allergies may manifest as:

Intense scratching or licking
Red, inflamed or dry skin
Chronic ear infections
Diarrhoea or vomiting

If your dog is showing any of these symptoms, consult your vet. They may recommend an exclusion diet to help identify the offending ingredient, along with a dermatologically formulated food.

Dietary Solutions: What to Feed for Digestive & Skin Support

For dogs with skin or digestive sensitivities, choosing the right food is essential to minimise discomfort and support recovery.

ROYAL CANIN®️ Dermacomfort Adult Dog Food

Formulated for dogs with sensitive skin, this range includes a specialised mix of omega-3 and omega-6 fatty acids to soothe skin, strengthen the barrier function, and reduce the risk of irritation. It also contains highly digestible proteins to limit allergens and promote coat health.

ROYAL CANIN®️ Digestive Care Range

This targeted range supports optimal stool quality and gut flora balance with prebiotics, a balanced fibre content, and easily digestible ingredients. It’s available for different breed sizes, ensuring the formula matches your dog’s unique physiological needs.

When to Speak to Your Vet

If you’ve noticed signs of skin irritation, digestive upset, or food allergies, it’s always best to consult your vet. They can recommend diagnostic tests, guide you through elimination diets, and help you find the right nutritional support for your dog’s individual needs.

A healthy dog starts with a healthy diet. Whether it’s dry skin or a sensitive tummy, what you feed your dog plays a direct role in how they feel and function. By choosing the right food, like ROYAL CANIN®️’s Dermacomfort or Digestive Care,, you can help your dog live a happier, healthier, more comfortable life.