Please choose the correct ending to complete the given sentence: Pets and Animals: [header] How to detect common signs of illness in cats [title] Look for problems on your cat's coat. [step] There are a variety of health problems that can show up on your cat's coat. Make sure the cat's coat is shiny and thick, that there are no patches of missing fur, and that your cat is keeping it nice and clean.

Ending1: [substeps] If you find a change in your cat's coat, give it a call. Call your vet right away if you notice any change in its coat. Ending2: [substeps] Feline breeds that are prone to clinical illness are those with falling out of their cage with a set of carrier keys. These can lead to vision problems like neural disc diseases. Ending3: Not only should you be able to see these changes in your cat, but you should also look for physical changes in your cat's appearance. If you see any visible changes in your cat, do not attempt to identify them yourself. Ending4: [substeps] Areas of missing fur could signal injuries, like those created during cat fights, that need veterinary treatment. They could also signal allergies or some other autoimmune or skin problem that also needs veterinary treatment.

Answer format: ending1/ending2/ending3/ending4