Please choose the correct ending to complete the given sentence: Pets and Animals: [header] How to brush your dog [title] Prepare your dog. [step] Find a safe, quiet place to brush your dog. If the weather is nice, outdoors is a good bet because you won't have to worry as much about cleaning up the dead hair.

Ending1: Make sure your dog feels comfortable with you, and speak in a calm, reassuring voice throughout the grooming session. [substeps] Ask your dog to sit, and then give them a treat. Ending2: [substeps] Most of the time, dogs sleep on their beds. Therefore, try not to brush your dog's bed. Ending3: Large dogs may not like to be brushed, and they may bite you if they are anxious. [substeps] Try to avoid brushing your dog's coat. Ending4: Unfortunately, brushing all your dog's fur is a bit harder to get out of. [substeps] If possible, avoid brushing your dog whenever possible.

Answer format: ending1/ending2/ending3/ending4