A new study showed that caterpillars will eat each other But why would the caterpillar eat his friends? Scientists sprayed the yummy plants with a plant defense chemical called methyl jasmonate and unleashed the caterpillars. Caterpillars on a treated plant chose to eat its counterpart over the plant. John Orrock, an evolutionary ecologist The study shows that plants are much smarter than we thought, and caterpillers are very hungry!
