As with any type of animal, insect, bird, and even humans, everyone has food preferences and as you will discover with the answers to “What do grasshoppers eat”, they are no different. Grasshoppers belong to the Orthoptera family, which also includes crickets, cockroaches, katylids, and literally thousands of additional insects.Although these insects are all related, they each consume different foods. For instance, some eat plants and other insects, as in the case of katylids, which are omnivores. However, grasshoppers are herbivores, meaning they only eat vegetation. For this reason, this type of insect is found in the grass, around gardens, in flowerbeds, and other places where plants grow.