Medium dogs weigh 21–50 lb (10–23 kg), such as a Beagle or Cocker Spaniel. They are usually treated as seniors from about 7.
Life stages for medium dogs
- PuppyUnder 1 year
- Growing fast and learning everything. Needs puppy food, vaccinations, and early training.
- Young adult1–2 years
- Nearly grown and full of energy. Training and exercise matter most.
- Adult2–6 years
- Settled, fit, and at their peak. Regular exercise and yearly vet checks keep them there.
- Senior7+ years
- Slower, stiffer, and more prone to health changes. Many vets suggest check-ups twice a year at this stage.