There are several types of beds specifically designed to relieve pain or tension from the muscles and improve joint and bone conditions. If your dog has arthritis, it would be best to opt for a thick and soft bed.
Memory foam mattresses are suitable because they will ensure a right posture and will help your dog get rid of joint pains. If foam beds are not within your price range, we would also suggest a bed that is thick enough to prevent your dog reaching the floor. The sleeping surface should be soft in order to provide a good night sleep.