Thanks so much for your very helpful reply.
The sticky urine is pretty common in diabetic cats.
It can be caused by too much protein or carbs in the urine or a PH imbalance.
He may have interstitial cystitis which is a UTI with no bacteria seen upon exam
Please read articles written by a feline vet:
Give Charlie 4 drops of unsweetened cranberry juice (by dropper) every day for ten days.
Consider the raw diet on Dr. Pierson's website.
Please let me know if the stickiness disappears after the cranberry juice treatment.
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