
Most dogs are considered senior from around seven years of age, though this varies by breed. Larger breeds tend to age faster, with some entering their senior years as early as five. Whatever the breed, ageing brings changes in metabolism, activity levels, and nutritional requirements.
Senior dogs typically need fewer calories as their activity levels decrease. Continuing to feed the same portions as their younger years often leads to gradual weight gain, which places extra strain on joints and organs. Reducing portion sizes or switching to a lower-calorie formulation can help maintain a healthy weight.
Joint health becomes increasingly important for older dogs. Look for foods containing glucosamine and chondroitin, which support cartilage health. Omega-3 fatty acids from fish oil also have anti-inflammatory properties that can benefit stiff or sore joints.
Kidney function can decline with age, so many senior-specific foods contain reduced phosphorus levels to ease the workload on the kidneys. However, protein levels shouldn't be drastically reduced unless specifically advised by a vet. Older dogs still need quality protein to maintain muscle mass.
If your senior dog is healthy, active, and maintaining a good body condition on their current food, there may be no need to change. The most important thing is regular monitoring and adjusting portions as needed. Always consult your vet if you notice significant changes in appetite, weight, or energy levels.

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Veterinary Nutrition Advisor
Sarah is a qualified veterinary nurse with a specialist interest in pet nutrition and dietary management. After 15 years in clinical practice across London and the South East, she joined Furra to help translate complex nutritional science into practical advice for dog owners. She lives in Kent with her rescue Greyhound, Mabel.
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