As dogs age, their metabolism, activity and appetite change — and so should their food. "Senior" starts around 7 years for most breeds (earlier for giant breeds, later for small ones).
What changes
- Fewer calories: older, less active dogs gain weight easily — keep them lean to protect joints.
- Quality protein: seniors still need good protein to maintain muscle.
- Joint support: many senior foods add omega-3s, glucosamine and chondroitin.
- Easy to eat: softer or wet food helps dogs with dental issues.
Watch for
Sudden weight loss or gain, changes in appetite or drinking, and trouble chewing are worth a vet visit — they can signal dental, kidney or other age-related issues.
Adjust gradually
Switch to a senior formula over 7–10 days, and weigh your dog regularly. Logging weight and food in a free PetsAlbum profile makes trends easy to spot — and keeps vaccination and vet records in the same place.