The Lion Pose
In this position, the muscles of the dog are tense and contracted and this actually prevents it from falling into a deep sleep.
Source: Jaw-Dropping Facts/Youtube
Therefore, this is a sleeping position adopted by a dog to relieve itself of stress and be comfortable.
They get into this position sometimes when they have a considerable amount of energy and they don't feel like sleeping.
They would prefer staying in a resting position where they can easily get up and play.
