This picture shows an overweight cat that is getting a complete clip. This cat had black material stuck on her hair around her anus and vulva which turned out to be fecal material and urine. The kitty was painful when her temperature was taken because the fecal material and urine build up resulted in urine scald to her skin and a skin infection. This is a fairly common problem in over weight cats (male and female). Over weight and obese female cats develop fat filled vulva folds that cover the vulva. The cat winds up urinating on the folds and developing urine scald and infection. Weight loss is important immediately to get rid of the fat filled vulva folds. A surgical procedure can also be done to remove the folds and air out the area.
If no surgery is done and no weight loss is attempted, the cat will repeatedly have the same problem which is very painful.