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Senior Dog Nutrition 101: What to Feed and What to Avoid

by Addiction Pet Foods on February 11, 2025

As dogs age, their nutritional needs change. Senior dogs require a well-balanced diet tailored to support joint health, digestion, and overall vitality. But with so many pet food options available, how do you know what’s best for your aging dog In this guide, we’ll break down the essentials of senior dog nutrition, including what to feed and what to avoid, so you can keep your senior dog happy and healthy. 

Aging dogs experience metabolic changes, decreased activity levels, and a higher risk of health conditions like arthritis, obesity, and digestive issues. The right diet can: 

  • Support joint and muscle health 

  • Improve digestion and nutrient absorption 

  • Boost immune function 

  • Maintain a healthy weight 

  • Promote a shiny coat and skin health 

What to Feed Senior Dogs 

1. High-Quality, Easily Digestible Protein 

Protein is essential for maintaining muscle mass and strength in senior dogs. However, aging dogs may have difficulty digesting lower-quality protein sources, so it’s important to choose lean, easily digestible options. 

Best Sources: 

  • Free-range meats like chicken or venison 

  • Fish rich in Omega-3 fatty acids, such as salmon 

  • Novel proteins like kangaroo for dogs with sensitivities 

2. Joint-Supporting Nutrients 

Many senior dogs suffer from arthritis and joint stiffness. Including natural joint-supporting ingredients in their diet can help maintain mobility and reduce discomfort. 

Key Nutrients: 

  • Glucosamine – Supports cartilage health and joint mobility 

  • Collagen – Helps with joint flexibility and skin elasticity 

  • Omega-3 Fatty Acids – Found in fish oils, these reduce inflammation and support brain health 

3. Fiber and Probiotics for Digestive Health 

Older dogs are more prone to digestive issues and constipation. A diet with the right balance of fiber and probiotics can promote gut health and regularity. 

Best Sources: 

  • Apples, pumpkin, and sweet potatoes – Natural fiber sources 

  • Probiotics and prebiotics – Found in high-quality dog foods for better digestion 

4. Healthy Fats for Skin & Coat Health 

Aging dogs often develop dry skin and dull coats. The right fats help maintain a soft, shiny coat and reduce inflammation. 

Best Sources: 

  • Salmon oil & fish oil – Rich in Omega-3s 

  • Flaxseed & coconut oil – Provide essential fatty acids 

5. Antioxidant-Rich Fruits & Vegetables 

Antioxidants help combat oxidative stress, which can accelerate aging and lead to chronic diseases. 

Best Sources: 

  • Blueberries, cranberries, and spinach – High in vitamins and antioxidants 

  • Carrots and kale – Support eye health and immune function 

What to Avoid in Senior Dog Diets 

  • Excessive Calories & Fatty Foods – Older dogs have slower metabolisms and are prone to weight gain. Avoid fatty cuts of meat, fried foods, and excessive treats. 

  • Artificial Preservatives & Fillers – Many low-quality commercial dog foods contain artificial additives, which can contribute to inflammation and digestive problems. Avoid BHA, BHT, and artificial colors. 

  • Excess Sodium & Sugar – High sodium levels can worsen heart and kidney conditions, while sugar contributes to obesity and diabetes. 

  • Hard-to-Digest Proteins & Grains – While whole grains can be beneficial for some dogs, fillers like corn, wheat, and soy can be difficult for seniors to digest. 

Best Senior Dog Food Options 

To ensure your senior dog gets the best nutrition, choose high-quality, specially formulated dog foods that support their unique needs. 

Recommended Senior Dog Foods: 

  • Outback Kangaroo Feast Air Dried Dog Food – A raw-inspired, air-dried alternative featuring wild kangaroo, a lean novel protein packed with essential amino acids to support muscle maintenance and overall vitality in senior dogs. 

  • Zen Vegetarian Dog Food – A plant-based, nutrient-rich formula designed for dogs with food sensitivities. Packed with wholesome vegetables, this meat-free option provides essential vitamins and antioxidants for aging dogs. 

  • Wild Islands Forest Meat Dog Food – Made with free-range New Zealand venison, this high-protein formula is rich in essential nutrients to maintain lean muscle mass, support joint health, and promote overall senior dog wellness.