The following x-ray is of a female/spayed cat who started urinating outside the box. She urinated on throw rugs, under a desk, in the sink and in the clothes basket. Unfortunately, the clothes were clean. Study the x-ray closely and then make your diagnosis.
Diagnosis: Urinary stones in the bladder and kidneys
Cats are susceptible to several types of urinary tract stones. If the stones contain calcium, they show up on x-rays like bone. The two most common types of radio opaque stones are struvite and calcium oxalate. See the oval shaped white spot just under the hips? This is a stone in the urinary bladder. The black colored areas in the center of the abdomen are gas in the intestines. Look on the left side of the x-ray above the gas filled intestines and below the spinal column. There are two small stones in the cat’s kidneys.