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Feeding a senior dog or cat

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Prasanna Muralidharan
Founder, Growlrr · 25 August 2026
A senior dog and senior cat with gentle fresh-food meals — feeding older pets for kidney and joint health
Short answer: older pets do best on high-quality protein with moderated phosphorus for ageing kidneys, and many senior cats actually need more calories, not fewer. Growlrr’s recipe-builder takes your pet’s age into account and completes a fresh bowl with one weight-dosed 5 g Growlrr BowlBalancer™ sachet, balanced to the NRC 2006 standard (the international nutrient reference vets and nutritionists use).

“Senior” is not a single switch that flips. But as dogs and cats age, a few nutritional themes come up again and again, and feeding with them in mind can make an older pet more comfortable. This is general guidance, not a treatment plan — if your vet has diagnosed a specific condition, follow their instructions.

Kidneys: moderate phosphorus, keep protein quality high

Ageing kidneys handle phosphorus (a mineral abundant in meat) less easily, so a common, sensible step for older pets is to moderate phosphorus rather than to slash protein. The distinction matters: older animals still need good protein to hold onto muscle, so the goal is high-quality protein, not less of it. A practical way to lower the phosphorus load without dropping protein quality is to swap some of the meat for egg white, which is high-quality protein with very little phosphorus. Keep the protein good; ease the mineral load.

The counter-intuitive one: senior cats often need MORE calories. We are used to thinking older animals need less food. That holds for many senior dogs, who slow down and gain weight easily. But late-senior cats frequently do the opposite — their ability to digest and absorb food declines and they start losing lean muscle mass, so their energy needs actually rise with age (Perez-Camargo 2004). An older cat that is quietly getting thinner may need more calories and more frequent meals, not a diet. Watch an ageing cat’s weight closely.

Joints, digestion and comfort

Older pets often have stiffer joints and more sensitive stomachs. The omega-3 fatty acids EPA and DHA (from fish) are commonly used to support joint comfort, and a fresh, moisture-rich, easily digestible bowl tends to sit more gently than a dry, dense one. Smaller, more frequent meals can help a senior with a fussier appetite or a touchier gut.

Work with your vet for diagnosed disease

One clear line: if your pet has diagnosed chronic kidney disease (CKD) or another condition, feeding becomes a clinical matter and should be managed with your vet, who may prescribe specific limits. The guidance here is for generally healthy senior pets, to feed them well as they age.

Feeding an older pet, made simple

Growlrr’s recipe-builder includes an age input, so it can tilt a fresh bowl toward the senior priorities — protein quality, moderated phosphorus, the right calories for a slowing dog or a lean-losing cat — and then complete it with one 5 g Growlrr BowlBalancer™ sachet dosed to weight, corrected to the NRC 2006 floors. A fresh, complete bowl that respects your pet’s age.

References

  • National Research Council (NRC). Nutrient Requirements of Dogs and Cats. Washington, DC: National Academies Press; 2006.
  • Pérez-Camargo G. Cat nutrition: what is new in the old? Compendium on Continuing Education for the Practicing Veterinarian. 2004;26(2A):5–10.
  • Association of American Feed Control Officials (AAFCO). Dog and Cat Food Nutrient Profiles (current edition).

Build an age-appropriate bowl for your senior pet →

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