Of all the 'bad' things that can happen, this one is easier than most for vets to identify, and typically very trreatable. Time for a vet, IMO. Observation is crucial, but perhaps it is time for actual data and test results from a medical professional (full blood panel, urine culture, poop test). If it is a situation requiring medical intervention, it will not get better by itself and it could get much worse in a hurry.I'm terrified it's a UTI this time around.
I would want hydration data. How many ml of water per day is being consumed?dark colored urine.
Dark urine could indicate blood, which could indicate cystitis, which is treatable, though the specific cause / trigger of cystitis can make an effective treatment difficult to zero in on. My post in the other thread touches on this subject. (Which for Sophie required a major diet change, but eventually cured her cystitis 100%.)