MEXICANJUMPINGBEAN
Mexican jumping bean
Mexican jumping beans, native to Mexico, are seed pods that have been inhabited by the larva of a small moth . The "bean", usually tan to brown in color, "jumps" when heated, because the larva spasms in an attempt to roll the seed to a cooler environment to avoid dehydration and consequent death. They are from the shrub Sebastiana pavoniana, often also referred to as "jumping bean". However, they are not related to actual beans, but rather to spurges. The beans are considered non-toxic, but are not intended to be eaten.The above text is a snippet from Wikipedia: Mexican jumping bean
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