Please choose the correct ending to complete the given sentence: Health: [header] How to identify renal failure [title] Keep track of any urinary changes. [step] Both acute and chronic renal failure are often accompanied by high urine output or no urine output. Chronic renal failure, specifically, is accompanied by urinary incontinence and/or recurrent urinary tract infections.

Ending1: [substeps] Chronic renal failure can also be accompanied by blurry, bluish urine, cloudy urine, constipation, no urine production at all, or decreased urinary capacity. [title] Inspect your kidneys for various problems. Ending2: [substeps] In rare cases, your pet's urine consistently becomes pink or bright red. These episodes may be unusual, especially if they come from a medical condition that causes your pet to go suddenly blue. Ending3: They may or may not go away completely or have recurrent incidents at any time. These typically use the following criteria as narrow definitions of the condition : [substeps] The kidneys are not able to emit enough urine. Ending4: Damage to the renal tubules results in polyuria, which means excess production of urine and usually occurs in the beginning stages of renal failure. Chronic kidney failure can also cause decreased amounts of urine, which usually occurs in more advanced forms of the condition.

Answer format: ending1/ending2/ending3/ending4