Cat Urinary Tract Disease is indicated by a range of symptoms that can include straining to urinate, more frequent urination and bloody urine.  Although cats affected by a urinary tract disease may present similar symptoms, the cause of the condition may vary.  Infections or obstructions may underlie Cat urinary tract disease in some cases, but often times diagnostic tests don't yield a conclusive cause.  For a better understanding of Cat urinary tract disease, we suggest the following online resources.

Cat Lower Urinary Tract Disease
Idiopathic Lower Urinary Tract Disease
Cat Urologic Syndrome( or Cat Lower Urinary Tract Disease) FAQs
Cat Bladder Stones
Cat Bladder Stones and Urinary Obstructions
Cat Cystitis