Please choose the correct ending to complete the given sentence: Pets and Animals: [header] How to help your senior dog sleep better [title] Give your dog a comfortable place to sleep. [step] As your dog ages, its body will naturally have more aches and pains. If your dog seems restless at night and it can't get comfortable, then if may need a softer, properly lit, and warmer place to sleep.

Ending1: [substeps] Consider getting a dog bed that is thoroughly cushioned. Padding can make your dog much more comfortable throughout the night. Ending2: Sleeping on a recliner or a sofa is not the best option and can result in your dog getting stiff and cramped over long periods of time. [substeps] Select soft fabric to cover your dog's hamstrings. Ending3: [substeps] Buy a bed that is comfortable for your dog. Mattresses tend to convey comfort instead of loneliness. Ending4: [substeps] If your dog is sleeping while you're watching tv or are at work, turn off your television and turn off your lights. Put a warm blanket or pillow over your dog's chest to help it to sleep.

Answer format: ending1/ending2/ending3/ending4