Please choose the correct ending to complete the given sentence: Pets and Animals: [header] How to diagnose and treat urinary problems in guinea pigs [title] Look for blood in your guinea pig's urine. [step] Examine your guinea pig's bedding and the hair around its bottom for dried blood. Blood typically dries a dark rust color rather than bright red.

Ending1: Seek veterinarian attention immediately or inspect your guinea pig's bedding and hair for it. [substeps] The infected hair can grow back if you do not remove it. Ending2: Also pay attention to feeling for skin lumps or molds on the red or lilac coloured hair. [substeps] Dark rust color generally indicates urinary tract problems. Ending3: [title] Examine bedding for infrequent urination. [step] When you change your guinea pig's bedding, look for bedding that seems overly dry with no urine spots. Ending4: It might also look bright green in comparison to your guinea pig's normal urine color. If you do find blood or droppings in your pig's bedding, be sure to pick it up for testing.

Answer format: ending1/ending2/ending3/ending4