When it comes to your dog's health, diet is one of the most powerful tools you have. While genetics and breed size play a big role in how long a dog may live, what you put in their bowl every day can make an enormous difference to their overall wellbeing and lifespan.

Here are seven foods that veterinary nutritionists recommend to support longevity in dogs.

The balance of bacteria in your dog's digestive system is closely linked to their immune health, energy levels and even how they age. As dogs get older, their natural gut bacteria tends to decline, which is why probiotics can be so valuable.

Supplements designed specifically for dogs, or small portions of natural yoghurt approved by a vet, can help keep their digestive system running smoothly and support their long-term health.

Raw bones are a natural toothbrush for dogs, helping keep teeth and gums strong into old age. Unlike cooked bones, which can splinter and cause harm, uncooked meaty bones are safer and provide essential minerals.

Making bone broth is another way to harness their benefits: packed with collagen and nutrients, it can support joint health, aid digestion and provide a soothing, anti-ageing boost for senior pets.

Fatty fish such as salmon are one of the best sources of Omega-3, a nutrient that supports healthy skin, brain function, eyesight and joint flexibility. Omega-3 also acts as a natural anti-inflammatory, helping older dogs with stiffness or arthritis. Adding fish to your dog's diet - in moderation - can keep their coat glossy and their immune system strong well into later life.

Eggs are among the most nutrient-dense foods you can offer your pet. They provide complete protein, essential fatty acids, antioxidants, calcium and a wide spectrum of vitamins. These nutrients are vital for cellular health, muscle maintenance and overall longevity. Best of all, most dogs love them - whether scrambled, boiled, or lightly cooked.

Carrots are an easy, inexpensive way to boost your dog's diet. Rich in beta-carotene, they protect eye health and slow age-related decline in vision. The crunch of raw carrots also supports dental hygiene, while the fibre aids digestion. Beyond that, minerals such as magnesium and potassium help keep bones and muscles strong.

Sweet, safe and full of energy, bananas can be a great occasional snack. They're rich in potassium and magnesium but naturally low in sodium and cholesterol. Offering small pieces - or even frozen banana cubes in the summer - gives your dog a healthy alternative to processed treats. Just remember to remove the peel, which is difficult for dogs to digest.

Talking to the Daily Mirror in 2022, veterinary expert Dr Michael Lazaris emphasised that "complete" food - meaning meals that contain all the nutrients required for your dog's life stage - should always be the foundation of their diet. Puppies, adults and seniors each have different energy and nutrient needs, so adjustments should be made accordingly. Treats, no matter how healthy, should make up no more than 10 per cent of daily intake.