Senior pets — generally dogs over 7 and cats over 10 — have very different nutritional needs from their younger counterparts. Getting this right can add years of healthy, comfortable life.

The most important change is reducing phosphorus intake, especially for cats, to protect kidney function. Many senior pet foods are specifically formulated with this in mind.

Joint health becomes increasingly important. Look for foods fortified with glucosamine and chondroitin, particularly for larger dog breeds prone to hip dysplasia and arthritis.

Calorie density matters too. Senior pets are often less active and can gain weight easily, which puts strain on joints and internal organs. Switch to a senior-specific formula that provides complete nutrition at a lower calorie count.

Always consult your vet before changing an older pet's diet, especially if they have existing health conditions.