Carnivorous plants evolved and began to eat the feces of animals.

Nepenthes - carnivorous plants - began to change their diet. They evolved and began to collect droppings of small mammals. It is more nutritious than insect excrement and provides plants with more nitrogen. To eat in a new way, the plants had to secrete more nectar with a natural laxative in the composition. These costs paid off: the tissues of the fecal-eating Nepenthes turned out to have almost twice as much nitrogen as in plants that eat traditional prey.