Please choose the correct ending to complete the given sentence: Pets and Animals: [header] How to reduce stress in cats [title] Observe changes in urination. [step] Urinary discomfort is a common result of stress in cats. The stress hormones cause the bladder lining to become inflamed, which results in physical symptoms.

Ending1: A healthy cat needs to urinate more frequently when it's around another animal. Count your cat's pee as a constant sign, and take note of signs of irritation when they are out and about and in public. Ending2: Keep track of how often your cat visits the tray. Signs of a problem include more frequent urination, discomfort while urinating, and possible blood in the urine. Ending3: Urinary incontinence, a condition that can cause enlarged testicles, is another common cause of bladder pain. [substeps] The pain lasts for 1-3 days while the cat breathes in and out, but it can return over time. Ending4: The act of urinating can cause increased levels of certain hormones in the body, also known as hyposensitidism, which leads to an enlargement of the bladder lining in cats. [substeps] Your cat may suddenly be urinating more frequently at night, or simply poo less often.

Answer format: ending1/ending2/ending3/ending4