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
Cavaliers are wonderful dogs, but at nine years old and with the breed's well-known predisposition to mitral valve disease, food choices genuinely matter more than with most seniors. The big concerns are keeping sodium low, supporting a healthy weight to reduce cardiac workload, and making sure digestibility is high so the heart isn't competing with a sluggish gut. Has your vet diagnosed any heart condition yet, or are you being proactive? And what are you currently feeding him or her?
She's been diagnosed with early-stage MVD — mitral valve disease — about six months ago. The vet put her on medication but didn't say much about food. She's currently on a standard senior kibble from a supermarket brand.
inparticular.ai
That's really useful to know, and honestly quite common — vets are brilliant at prescribing the right medication but nutrition often gets less airtime. With an MVD diagnosis, the priority shifts pretty clearly: you want controlled sodium to reduce fluid retention risk, an appropriate calorie level so she stays lean, and good quality protein to maintain muscle without overloading the kidneys, which can also be under strain in cardiac dogs. Is she a healthy weight at the moment, and does she have any other conditions — kidney issues, arthritis, anything like that?
She's a good weight, the vet was happy with that. No kidney issues flagged so far. Just the heart.
inparticular.ai
Perfect — that makes this more straightforward. Given the confirmed MVD diagnosis, I'd point you toward Royal Canin Cardiac dry dog food. It's a veterinary diet specifically formulated for dogs with heart disease: sodium is tightly controlled, it has added taurine and EPA/DHA omega-3s which support cardiac muscle function, and the calorie density is calibrated to help maintain lean body condition. It's not a general senior food — it's designed for exactly this situation. The one thing to note is that it's classed as a veterinary diet, so ideally you'd have a quick conversation with your vet to confirm it's appropriate alongside her current meds, but given she's already diagnosed and being treated, most vets will be comfortable recommending it. You can find it on Amazon UK in 2kg and 14kg bags. Would you like any guidance on transitioning her off the supermarket kibble without upsetting her stomach?
Yes please — she's always had a slightly sensitive stomach.
inparticular.ai
With a sensitive stomach, go slowly — more slowly than the packet usually suggests. I'd do a 10-day transition: days one to three, mix about 25% new food with 75% old. Days four to six, go 50/50. Days seven to nine, 75% new and 25% old. Day ten, fully switched. If you see any loose stools, hold at the current ratio for an extra two or three days before moving forward. The good news is Royal Canin's digestibility is generally high, so most dogs tolerate it well — but Cavaliers with sensitive digestion appreciate that slower pace.
That's really helpful. Should I be giving her any supplements on top of this?
inparticular.ai
Because Royal Canin Cardiac already includes taurine and omega-3s at therapeutic levels, you don't want to double up without veterinary guidance — over-supplementing can be as problematic as under-supplementing in cardiac dogs. The one thing I'd ask your vet about specifically is CoQ10, which some cardiologists do recommend alongside MVD management, but that's a conversation to have with them rather than something to add off your own bat. For a dog already on a well-formulated cardiac diet and her medication, you're actually in a good position — the food is doing a lot of the work.
