Please choose the correct ending to complete the given sentence: Pets and Animals: [header] How to diagnose feline skin problems [title] Look for wounds. [step] Wounds might be painful, moist, oozing, or discharging. Alternately, they might already by scarred over, and you might find only spots or scabs left behind by a nasty feline skin problem.

Ending1: [substeps] When you detect a wound on your cat, monitor it regularly. If it changes color or begins to ooze, stink, or discharge, the wound is infected. Ending2: Slits (black or blue pus leaking from the wounds) may also be dangerous. [substeps] If you suspect your cat may have ingrown hairs on his face, head or body, have it checked out by a vet. Ending3: [title] Keep an eye out for juvenile skin irritation. [step] A cat with a juvenile skin condition might display burns, blisters, bumps, hives, puffiness, or lumps, as well as weskin irritation. Ending4: Look for angry red patters or skin splits on your cat's skin, which might indicate pain or irritation. However, if your cat appears mildly irritated, it likely has not already been treated.

Answer format: ending1/ending2/ending3/ending4