Senior dogs
What changes should I expect once my dog turns senior?
Last updated 23 September 2026 · How we write and check this
Short answer
Expect gradual shifts rather than a sudden transformation: slightly lower energy, a slower metabolism that calls for smaller portions, more time spent sleeping, and possibly some stiffness after rest. Most healthy senior dogs still enjoy daily walks and play, just at a gentler pace. The goal is to notice and adjust to these shifts over months, not to expect them all on the day your dog technically crosses into the senior category.
Physical changes
Metabolism typically slows by around 20 percent in the senior years, so a dog eating the same amount as before can start gaining weight even with no change in activity. Muscle mass also gradually decreases, which is part of why many senior dogs look slightly leaner through the topline even as their waist thickens, a combination that can be easy to miss until it has been happening for months.
Behavioral changes
Some dogs sleep noticeably more, waking less eagerly for the first walk of the day. Others become more attached to their owners, wanting to be closer by. A smaller number become a bit more anxious about routine changes than they were as younger, more adaptable dogs.
Practical adjustments worth making
Reviewing portion sizes every few months, adding a supportive bed, and keeping exercise consistent but shorter can all help smooth this transition. It is also a good time to start a habit of brief home checks: running your hands over your dog's body weekly to notice new lumps, stiffness, or weight change early.
None of these changes need to happen overnight. Spreading them across several months, starting with the simplest such as a softer bed or a slightly smaller portion, tends to work better than a single big overhaul that disrupts a routine your dog has relied on for years.
Key takeaways
- Metabolism often slows around 20 percent, so portions may need adjusting even without a change in behavior.
- Muscle loss and a thickening waist can happen together, changing your dog's shape.
- Increased sleep and closer attachment to owners are common, mild behavioral shifts.
- Weekly at-home body checks help catch changes early.