It is born asleep, and it dies asleep. All its movements are apparently no more than the results of it tossing and turning in its dreams.
The log it holds was given to it by its parents at birth. It has also been known to cling to the arm of a friendly Trainer.
It stays asleep from the moment it's born. When it falls into a deep sleep, it stops moving altogether.
It remains asleep from birth to death as a result of the sedative properties of the leaves that form its diet.