A urinary blockage is one of the most life threatening emergencies in cats and it advances faster than most pet parents realize. When a cat cannot pass urine, pressure builds inside the bladder and that pressure immediately begins pushing toxins back into the bloodstream. As the obstruction continues, the kidneys start to shut down under the strain. Electrolytes rise to dangerous levels, the heart rhythm becomes unstable, and the cat can progress into fatal renal failure. This decline can happen