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
Moving a working or performance dog onto a senior formula is one of the more nuanced switches to get right — because you're managing two changes at once: the dog's age and a big drop in activity level. Senior dogs genuinely do need fewer calories, better digestibility, and more joint support, but the right timing and formula depends a lot on the individual dog. What breed and age is yours, do they have any health conditions, and what are they currently eating?
He's a 9-year-old Doberman, just retired from Schutzhund. He's been on a high-protein performance kibble — Eukanuba Working & Endurance — for about four years. No diagnosed health conditions but he's starting to slow down and I want to get ahead of any joint issues.
inparticular.ai
That's a really sensible time to make the switch. Nine is solidly senior for a Doberman, and retiring from Schutzhund means his calorie needs will drop noticeably — probably 20–25% — almost immediately. The Eukanuba Working formula is high in fat and protein to fuel sustained output, which is great for an active dog but can lead to weight gain and put extra strain on joints and kidneys once that activity disappears. A couple of quick questions: is he currently a healthy weight, and has he had any cardiac screening? Dobermans are predisposed to DCM, and that's worth factoring into the protein and taurine picture.
He's in good shape — maybe a tiny bit heavy now that training has eased off, so that confirms what you're saying. He had a cardiac check 18 months ago and was clear. I'm not in a rush but want to make the move in the next few weeks.
inparticular.ai
Good — clear cardiac check and a healthy base weight makes this straightforward. For a large, recently retired working dog I'd point you toward Royal Canin Maxi Ageing 8+ — it's designed specifically for large breeds from 8 years onwards and hits the right notes here: reduced but still respectable protein levels, L-carnitine to help manage weight as activity drops, added EPA and DHA for joint health, and good digestibility. It's not a 'light' food, so you're not overcorrecting, but it is calibrated for a dog who's moving less. Given Dobermans and DCM, Royal Canin also uses named meat proteins and their formulations have been taurine-tested — worth knowing. I'd transition over 10–14 days, starting at about 25% new food and increasing slowly. His gut has been on the same food for four years, so give it time.
That sounds right. Should I be worried about dropping the protein too much given he's a big muscular dog? I don't want him losing muscle mass as he ages.
inparticular.ai
It's the right thing to watch, but the Maxi Ageing 8+ sits at around 25% protein on a dry matter basis, which is enough to maintain muscle in a healthy senior dog who's still getting regular moderate exercise. The risk of muscle loss in senior dogs actually comes more from too little protein than too much, but the bigger risk with a recently retired working dog is keeping the protein sky-high while the activity craters — that's where you get weight gain and kidney load. As long as he's still getting daily walks and the odd bit of structured movement, the protein in this formula will serve him well. If he ever becomes very sedentary or loses muscle noticeably, that's the time to revisit with your vet.
Perfect. That all makes sense. I'll order it this week.
inparticular.ai
Great — Royal Canin Maxi Ageing 8+ is widely available on Amazon UK, usually in 3kg and 15kg bags. Go for the 3kg first so you can confirm he takes to it before committing to a larger sack. Transition slowly, keep an eye on his weight in the first couple of months since his activity is still settling, and adjust portion size down slightly if he starts filling out. He sounds like he's been well looked after — this switch should set him up nicely for the next chapter.
