Water first

Water is the most important nutrient, and senior dogs may simply forget to drink.1 Adding water to food makes it easier to digest for older dogs2 and can tempt a picky eater, as can warming the food a little.3 A sudden increase in thirst or urination is a reason to call the vet.3

Keep them lean

About “senior” food

There’s no official nutrient standard for senior dog food in the US, so “senior” on a bag isn’t regulated.2,4 Seniors generally do well with fewer calories per bite, more fiber, and possibly a bit more protein2 — the right choice depends on each dog’s bloodwork, weight and muscle. Log food changes in Records so you can answer “when did you switch?” at the vet.

Sources

  1. Feeding Mature and Senior Dogs — Sarah K. Abood, DVM, PhD, et al. — VCA Animal Hospitals
  2. 2023 AAHA Senior Care Guidelines for Dogs and Cats (JAAHA 59:1) — Dhaliwal R, et al., American Animal Hospital Association
  3. Your Senior Pet From Head to Toe (client handout) — American Animal Hospital Association
  4. WSAVA Nutritional Assessment Guidelines — World Small Animal Veterinary Association
  5. Senior Pets (client brochure, 2023) — American Veterinary Medical Association

Sources checked September 2026. This guide is general education, not veterinary advice for a specific dog.