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
Having two Spaniels at different life stages under one roof means your older dog is almost certainly eating food that isn't right for him anymore — younger dogs need more calories and protein than a 10-year-old Cocker Spaniel typically should be getting. Senior dogs genuinely do need something different: lower calorie density, easier digestibility, and joint support are the big ones — but the right food depends on his current health and what he weighs. Can you tell me a bit more about him? Any health issues like ear problems, weight creep, or stiff joints, and what are the two of them currently eating?
He's a 10-year-old Cocker Spaniel called Biscuit, about 12kg. He's been sharing a bag of James Wellbeloved Adult Turkey with our 2-year-old Milo for the past year. Biscuit has started getting a bit stiff in the mornings and he's put on maybe half a kilo in the last few months. No other health issues. Milo is fine on the current food.
inparticular.ai
That morning stiffness combined with slow weight gain is a really common picture for a Cocker Spaniel of Biscuit's age — the adult formula he's been sharing is calorically a bit rich for a less active 10-year-old, and it won't have the joint support he now needs. The good news is Milo can stay on his current food; you just need to split their feeding so Biscuit gets his own bowl. One more quick question before I suggest something specific: is Biscuit's coat still in decent condition, or has it got drier or duller recently?
His coat is actually fine, still nice and silky. Main concerns are just the stiffness and the weight.
inparticular.ai
Good — a healthy coat tells me his skin and fat-soluble nutrient intake is okay, so we don't need to chase that angle. For Biscuit I'd go with Royal Canin Cocker Spaniel Adult 5+ dry food. It's breed-specific which matters here — it's been formulated with the Cocker's ear health, coat texture, and tendency to gain weight in mind, and the 5+ version is calorie-controlled with added glucosamine and chondroitin for that joint stiffness you're already seeing. It's kibble shaped specifically for a Cocker's jaw too, which encourages proper chewing. Feed him separately from Milo — even just in different corners of the kitchen — and portion to the lower end of the guide for his weight since he's already slightly over. You should notice the morning stiffness ease within 6-8 weeks as the joint nutrients build up.
That sounds really sensible. How do I transition him without upsetting his stomach? And will Milo try to eat Biscuit's food?
inparticular.ai
Transition gradually over 10 days — start with about 20% new food mixed into his current James Wellbeloved and increase by roughly 10-15% every couple of days. Cocker Spaniels can have sensitive digestion so going slowly really does help avoid any loose stools. On the Milo problem: the simplest fix is to feed them in separate rooms and pick the bowls up the moment they've finished. Most dogs adjust to this routine within a week and stop trying to poach each other's food. If Milo is a fast eater and Biscuit is slower, feed Milo first in one room, close the door, then give Biscuit his bowl in peace.
