An ottery sleeping bag
The bemused otter licked its chops and returned to its peaceful slumber, and as the hours went by its powerful and rapid digestive system went to work on its meal.
Spirit Bound: Chi
Chi excessively yin: 1) rapid digestion of food, giving huge spike in energy after eating but crashes soon after.
Establishing Dominance
Apparently, his mother's side of the family had a history of rather... rapid digestion, coupled with a slow metabolism, leading to a steady rate of easy weight gain in his family tree.