Vet-recommended wet food for concentrated urine in cats

Concentrated urine on bloodwork is your vet's way of saying your cat isn't getting enough fluid through his daily routine — and switching to wet food is genuinely one of the most effective ways to fix that. Ocicats are an active, muscular breed and at 8 years old your boy is hitting the age where kidney health really starts to matter. Wet food is better for cats full stop — more hydration, more satiating, closer to what they'd actually eat in the wild — but in your situation it's not just preferable, it's medically the right call. Before I point you toward something specific: is he on any prescription diet from the vet, or did they leave the choice of product to you?

Good — that gives you flexibility. A cat who's been on dry food his whole life can be resistant to wet food at first, so texture and smell matter a lot in the early days. What's he currently eating, and does he tend to be a fussy eater or will he eat pretty much anything?

That's really helpful. Strong smell is actually a good sign — it means fish-based wet foods are likely to go down well, and those tend to have excellent moisture content. My recommendation for your situation is Lily's Kitchen Fishy Feast for Adult Cats. It's around 80% moisture, made with whole mackerel and herring, no grain fillers, no rendered meat meal — just proper ingredients. The smell is strong enough that even transition-resistant cats tend to accept it, and it's nutritionally solid for a cat heading into his senior years. It's widely available on Amazon UK and reasonably priced for the quality. Start by mixing a small amount in with his kibble for the first few days to ease the transition, then gradually reduce the dry food over a week or two.

Given the vet's concern about urine concentration, I'd aim to get him to predominantly wet food — ideally 80–90% of his diet — rather than a 50/50 split. A small amount of dry as a treat or topper is fine and won't undo the progress, but the more moisture he's getting through his food, the better for his kidneys. If the 6-week recheck shows his urine has normalised, you'll know the switch is working. Keep a small bowl of fresh water available too — some cats drink more once they've made the switch to wet, oddly enough, because they're not as chronically under-hydrated.

Good plan. The 6-week window is actually ideal — it gives you enough time to complete the transition properly and for his kidneys to reflect the change in his bloodwork. If he turns his nose up at the Lily's Kitchen initially, try warming it slightly to bring out the smell. Good luck at the recheck — fingers crossed for better numbers.