Please choose the correct ending to complete the given sentence: Pets and Animals: [header] How to treat ear mites [title] Look for redness and irritation. [step] The inside of the ear will be red and irritated; however, while a red irritated ear can be a sign of ear mites, that in and of itself isn't a definitive symptom. If you don't see any other ear-mite symptoms or have any doubt, see your vet.

Ending1: [title] Look for electrodes near the affected ear. [step] Electrical activity involved in ear mites can cause them to swell and blister, causing pain. Ending2: [substeps] Ear mites are very seasonal, which means that the mites can stay active in the winter months, especially in cooler climates. Even in cool weather, they can cause your dog to cough or complain. Ending3: [substeps] Not all red and irritated ear canals are due to ear mites. Ear infections involving bacteria and yeast are quite common, particularly in dogs. Ending4: [substeps] If you feel discomfort or itch when touching your new ear, then it is likely caused by mites, not fungal. [title] Notice any discharge coming from the ear canal.

Answer format: ending1/ending2/ending3/ending4