N. rapah pitchers have huge orifices, but they also grow large concave lids held at an angle of about 90 degrees away from the orifice. The inside of these lids are covered with glands that exude huge amounts of nectar. Most importantly, the distance from the front of the pitcher's mouth to the glands corresponds exactly to the head to body length of mountain tree shrews.
The shrew perches on the plant to lick nectar from the "lid" and on most occasions it poops into the conveniently positioned toilet bowl to mark its territory. [...] This toilet bowl system is so effective that the plant satisfies almost all its nutritional needs from the shrew feces.
The Coolest Carnivorous Toilet Plant You'll See This Week
Current Music: The Epoxies -- Bathroom Stall ♬