Each jaw of the Venus flytrap can only close a few times before dying

Contrary to popular belief, Venus flytraps do not make acids. The digestion process is in fact caused by enzymes secreted by glands in the trap. The enzymes reduce the protein in the bug, reducing it to a skeleton. The trap then reopens, ready for reuse. Traps typically only open or close three times before dying. (So don't stick your finger in it!) http://flytrapgrowing.info/category/science/