Dogs sleep in a variety of positions, each of which can tell you something about their personality and well-being.
Dogs who sleep on their backs with their belly up are typically relaxed and comfortable. They may also be feeling playful or submissive.
Dogs who sleep on their sides are usually feeling relaxed and secure. They may also be feeling cold.
Dogs who sleep curled up in a ball are typically feeling safe and secure. They may also be trying to stay warm.
Dogs who sleep in the "sploot" position (with their legs stretched out behind them) are usually feeling relaxed and comfortable. They may also be feeling playful or excited.
Dogs who sleep with their head on their paws are typically feeling relaxed and content. They may also be feeling secure or protective.
Dogs who sleep buried under blankets or pillows are typically feeling cold or insecure. They may also be trying to hide.