All carnivorous plants eat insects and spiders such as Moths, flies, Wasps, Beetles & Butterflies. A Lot of people will believe that carnivorous plants can eat humans, this is not true, but they can eat salamanders. Some people worry that pitcher plants eat our frogs but in fact the frog benefits from the plant, the plant keeps it cool in the summer and has first pick to any insects coming by and the frog gives the plant nutrients by digesting its waste into it.