Please choose the correct ending to complete the given sentence: Pets and Animals: [header] How to care for chinese crested dogs [title] Apply sunscreen. [step] Because chinese crested dogs have hairless bodies, their skin is prone to sunburn. If you know you will be spending an extended amount time in the sun, for example 45 minutes or more, apply sunscreen on your dog.

Ending1: Simply apply a generous amount every 15 minutes, and reapply it frequently while it is out in the sun. You can buy a sunscreen at your local pet store and apply it once or twice a day. Ending2: Use dog-safe, recommended sunscreen. You can find this at pet supply stores. Ending3: Apply your sunscreen with an spf of 15 or higher every day. [substeps] Extra sunscreen isn't necessary, but should be applied every few days. Ending4: [substeps] You can also use liquid sunscreen. Follow the directions on the bottle of sunscreen.

Answer format: ending1/ending2/ending3/ending4