The Importance of Protein in Older Dogs

As dogs enter their senior years, their nutritional needs begin to change.

You may notice your dog slowing down, losing muscle tone, or becoming less active than they once were. These changes are often linked to ageing — but diet plays a crucial role in how well dogs maintain their strength, mobility and overall wellbeing.

One of the most important nutrients for ageing dogs is protein.

In this guide, we’ll explain:

• Why protein is essential for older dogs
• Signs your dog may need more protein
• Practical ways to increase protein safely
• How protein supports mobility, joints and long-term health

Why Protein Is Essential for Older Dogs

Protein is a fundamental nutrient that supports almost every function in your dog’s body. As dogs age, their requirement for high-quality protein often increases rather than decreases.

1. Maintaining Muscle Mass and Strength

One of the most common issues in senior dogs is muscle loss (sarcopenia).

This can lead to:

• Reduced mobility
• Weakness in the hind legs
• Difficulty standing or climbing stairs

Protein provides the amino acids needed to maintain lean muscle mass, which is essential for keeping older dogs active and mobile.

2. Supporting Joint Health and Mobility

Strong muscles help stabilise joints.

Without adequate protein, dogs may experience:

• Increased strain on joints
• Reduced support around hips and elbows
• Greater stiffness and discomfort

This is particularly important for dogs showing early signs of stiffness or arthritis — you can read more in our guide to dog arthritis treatment and mobility support.

👉 You can learn more about this in our guide to dog arthritis treatment and mobility support.

3. Strengthening the Immune System

Protein is required to produce:

• Antibodies
• Enzymes
• Immune cells

As dogs age, their immune system becomes less efficient. A protein-rich diet helps support their ability to fight infections and recover from illness.

4. Supporting Tissue Repair and Recovery

Older dogs are slower to heal.

Protein plays a key role in:

• Repairing damaged tissues
• Maintaining organ function
• Supporting recovery from injury

This is especially relevant for active or working dogs entering later life.

5. Promoting Healthy Skin and Coat

A dull coat or flaky skin can often be linked to poor nutrition.

Protein supports the production of:

• Keratin (hair and skin structure)
• Collagen (skin elasticity)

Adequate protein helps maintain a healthy coat and skin barrier, reducing the risk of irritation and infection.

6. Supporting Cognitive Function

Emerging research suggests that certain amino acids contribute to brain health in ageing dogs.

This may help support:

• Alertness
• Behaviour
• Cognitive function

While not a cure for cognitive decline, good nutrition can play a supportive role.

Signs Your Older Dog May Need More Protein

If your dog’s diet is lacking in protein, you may notice:

• Loss of muscle, especially in the hind legs
• Reduced strength or mobility
• Dull or thinning coat
• Low energy levels
• Unexplained weight loss
• Slower recovery from illness or injury

If you recognise these signs, it may be worth reviewing your dog’s diet.

How Much Protein Does a Senior Dog Need?

There is no single answer, as requirements vary depending on:

• Breed and size
• Activity level
• Health conditions

However, most senior dogs benefit from:

👉 High-quality, highly digestible protein sources
👉 Consistent daily intake

It’s important to focus on quality over quantity.

10 Practical Ways to Add More Protein to Your Dog’s Diet

Increasing protein doesn’t have to be complicated. Here are some simple, safe ways to improve your dog’s intake.

1. Choose a High-Quality Dog Food

Look for foods where:

• Real meat is the first ingredient
• Protein content is clearly stated
• Formulas are designed for senior dogs

Balanced commercial diets are often the easiest foundation.

2. Add Lean Meat to Meals

Cooked lean meats such as:

• Chicken
• Turkey
• Lean beef

…can be added in small amounts to boost protein intake.

Avoid seasoning, salt or sauces.

3. Include Eggs

Eggs are one of the most digestible protein sources.

Serve:

• Boiled
• Scrambled (plain)

They also provide healthy fats and nutrients.

4. Add Fish for Protein and Omega-3

Fish such as:

• Salmon
• Sardines
• Mackerel

…provide both protein and omega-3 fatty acids, which support joint health and help manage inflammation.

5. Use Cottage Cheese (in Moderation)

Low-fat cottage cheese is:

• High in protein
• Easy to digest

Some dogs tolerate dairy well, but introduce slowly.

6. Try Plain Greek Yogurt

Greek yogurt contains:

• Protein
• Probiotics

This can support digestion alongside protein intake.

7. Introduce Organ Meats Carefully

Organ meats (like liver) are:

• Nutrient-dense
• Rich in protein

Feed in small amounts to avoid imbalance.

8. Choose Protein-Rich Treats

Look for treats made from:

• 100% meat
• Minimal additives

These can support protein intake between meals.

9. Add Bone Broth

Bone broth provides:

• Protein
• Collagen
• Joint-supporting nutrients

It can also improve food palatability for older dogs.

10. Include Certain Vegetables

While not primary protein sources, vegetables like:

• Peas
• Spinach
• Broccoli

…can contribute small amounts of protein and fibre.

Transitioning to a Higher Protein Diet

When increasing protein:

✔ Introduce gradually over 7–10 days
✔ Monitor digestion
✔ Watch for changes in energy or stool

Sudden changes can cause digestive upset.

When to Speak to Your Vet

Before making significant dietary changes, consult your vet — especially if your dog has:

• Kidney disease
• Liver issues
• Digestive sensitivities

Protein needs may need to be carefully managed in these cases.

Protein and Joint Health: The Bigger Picture

Protein is just one part of supporting an ageing dog.

For optimal mobility and comfort, consider a combined approach:

• Balanced nutrition
• Weight management
• Gentle exercise
• Joint support supplements

Alongside nutrition, many owners also explore targeted joint support — our guide to the best dog joint supplements in the UK explains what to look for.

👉 If you're exploring supplements, see our guide to best dog joint supplements in the UK.

Final Thoughts

Protein plays a vital role in helping older dogs maintain:

• Strength
• Mobility
• Immune function
• Overall quality of life

As dogs age, the goal isn’t just longevity — it’s comfort, movement and wellbeing.

By ensuring your dog receives enough high-quality protein, alongside proper care and attention, you can help them stay active and happy well into their later years

Some owners also choose to support their dog’s diet with carefully formulated nutrition — you can explore our range of joint support for dogs if helpful.

👉 joint support for dogs

👉 You can also read this article on The Good Dog Guide