Does your aging dog have joint pain and incontinence problems? Consider a memory foam dog bed for large dogs that addresses this issues. Look for an orthopedic dog bed with waterproof removable and washable.cover to protect the memory foam pad. Memory foam beds keep senior pets comfortable by relieving the pain of arthritis, hip dysplasia, joint and muscle stiffness. Your dog will not have to wake up in the middle of night or toss and turn trying to find that comfort spot.