Enlil was not represented anthropomorphically in Mesopotamian iconography. Through Buddhist influence, kami came to be depicted anthropomorphically and were situated within Buddhist cosmology. Larger engines, treated anthropomorphically, are asked to pull the train; for various reasons they refuse. Animals and other creatures were frequently presented anthropomorphically. Potatoes are represented anthropomorphically as well as naturally. It was only under the influence of Buddhism that they were depicted anthropomorphically. Maize was represented anthropomorphically as well as naturally. Many animal species have mate-selection rituals also referred to as "courtship" anthropomorphically.