At what age should I switch to senior food?

There's no universal age -- it depends on species, size, and individual health. Large dogs are often considered senior around 6-7 years, small dogs and cats closer to 10-11. Discuss timing with your veterinarian based on your pet's actual condition, not just age.

Do senior pets need less protein?

Generally no -- current veterinary nutrition guidance recommends adequate (not reduced) protein for most healthy seniors to help preserve muscle mass. Protein restriction is specific to certain medical conditions like advanced kidney disease.

Is senior food worth it if my older pet seems healthy?

It depends on the specific formula and your pet's needs. A healthy, active senior with no weight or joint issues may not need to switch at all; one with weight gain or joint stiffness may benefit from a formula addressing those specifically.

Senior Pet Food vs. Regular Adult Food: Is the Switch Necessary? | PetCalculator

"Senior" pet food is not as tightly regulated a category as puppy or kitten food, which makes this comparison more nuanced. Here's what actually changes, and when it matters.