Do dogs like to sleep with the light on or off?

Do dogs like to sleep with the light on or off? While darkness is not technically necessary for dogs to sleep, they do have a much better quality of sleep in a dark room, just as we do. Dogs are generally comfortable in the dark.

While darkness is not technically necessary for dogs to sleep, they do have a much better quality of sleep in a dark room, just as we do. Dogs are generally comfortable in the dark.