Please choose the correct ending to complete the given sentence: Pets and Animals: [header] How to help a dog with cataracts [title] Know the signs of cataract growth. [step] Cataracts develop over time and the key is to treat them early. As a dog owner, make sure to inspect your dog's eyes on a regular basis.

Ending1: This is especially important at the beginning of the year, as cataracts often develop in the early spring. [substeps] Look for scaly or waxy patches on your dog's eyes. Ending2: These are the parts of the eye that are always being examined, and may extend beyond just your dog's eye. Cataracts can often appear as dark rings of yellowish-brown skin on the outer edges of the eye. Ending3: Everything you look for should be present, it is important that you take the time to assess whether you are seeing any clear patterns of current activity. [substeps] Take pictures of any changes in behavior, near and far from eye color as often as possible. Ending4: Look for any indications of a cloudy appearance or a color change. If your dog already has cataracts, watch to see if the impacted area grows or changes in shape.

Answer format: ending1/ending2/ending3/ending4