My two are raw fed and William drinks a lot less than Louis, always has done. A couple of years ago he had a UTI and I occasionally notice that his pee looks and smells a bit strong, but that may be at least partly due to him being one of those dogs that only has a pee when he needs to, unlike Louis who sprinkles every landmark outside!
As far as I know his kidneys and waterworks are functioning well. He had 2 lots of lump surgery in 2016 (nothing sinister thank goodness) and he had blood tests beforehand, including kidney function, that didn't show up anything unusual.
So I add a little bit of warm water to his breakfast. If his breakfast is Natural Instinct or Nature's Menu mince it looks a bit more like a soup
, but he still enjoys it. I've no idea if it makes any real difference to his health, but he's 12 now so I tend to fret over him a bit.
So it might be worth trying that with Maddie?