male american bullfrog (rana catesbeiana lithobates catesbeianus)

frog floating american bullfrog wetland amphibian aquatic calm catesbeiana catesbeianus environment herpetology invasive species lithobates nature peaceful pond rana ranidae relaxing wildlife adult animal zoology mexico outdoors fauna yellow green water wild lake eye frogs summer creature swim desert irrigation large vegetation marsh anuran habitat natural day diurnal male reflection