This is a specific conversation about Senior dog food — what changes as they age — ask about yours and get one honest answer for your exact situation.
inparticular.ai
Senior dogs genuinely do need a different diet — typically fewer calories, easier-to-digest protein, and meaningful joint support built in — but the right time to switch and what to switch to really depends on the breed and health picture. Giant breeds like Newfoundlands age faster than small dogs, so the calculus shifts earlier for them. To point you somewhere specific: what breed and age is your dog, do they have any health conditions you're already managing, and what are they eating right now?
He's a 7-year-old Newfoundland, about 65kg. No diagnosed conditions yet — joints seem fine, he's still moving well. I just know the breed is prone to joint problems and I want to get ahead of it. He's currently on a standard adult large breed dry food.
inparticular.ai
That's exactly the right instinct. Newfoundlands are one of the breeds where you really don't want to wait for a limp before acting — their sheer weight puts continuous stress on joints, and the research on early nutritional intervention for cartilage health is pretty solid. At 7, he's squarely in the window where switching makes sense. A couple of quick questions: is his weight stable, and is he neutered? Both affect calorie needs, and at 65kg I want to make sure we're not tipping him into weight gain, which would be the worst thing for those joints.
Weight is stable, vet was happy with his condition score at his last check. He's neutered. I'm not worried about him gaining — he's pretty active still, we do long walks.
inparticular.ai
Perfect — stable weight, good activity level, neutered, no active issues. That actually gives you more flexibility. My recommendation here is Hill's Science Plan Large Breed Mature Adult 6+ with Chicken. It's formulated specifically for large and giant breeds from 6 years on, with clinically supported levels of glucosamine and chondroitin, controlled phosphorus for kidney health as they age, and a calorie density that suits an active senior without risking weight creep. It's also highly digestible, which matters more as they get older. For a Newfoundland at 7 with no current issues, this is the food I'd put him on right now — it does the preventive joint work without being a therapeutic diet he doesn't need yet.
That sounds sensible. How long should the transition take from his current food?
inparticular.ai
With a big dog and no digestive issues, a 10-day transition works well. Start with about 25% new food mixed into 75% old for the first three days, move to 50/50 for the next three, then 75% new for a few days, and finish on 100%. Newfoundlands can have sensitive stomachs, so don't rush the middle stage — if you see any loose stools, just hold at that ratio for an extra two or three days before moving on. Once he's settled, keep an eye on his weight monthly. If he starts gaining, pull back the portion slightly — the feeding guide on the bag tends to run a little generous.
Really helpful, thank you. I'll order it and start this week.
inparticular.ai
Great call — getting in front of joint deterioration in a breed like his is genuinely one of the highest-value things you can do right now. If you notice any changes in mobility or energy over the next few months, that's worth flagging to your vet even if it seems minor — early physio or a joint supplement added on top can make a real difference. But based on what you've described, he sounds like he's in a really good place. Hope the transition goes smoothly.
