Huge Bullfrogs During Mating Season In Central Kalahari - close up shot

bullfrogs mating season african bullfrog central kalahari pond water frog bullfrog wildlife nat geo habitat adspersus amphibian giant nature exotic outdoor big wet creature tropical game reserve africa large natural african ecology aquatic animal wild close up big frog southafrica frogs fauna grass macro movement jump species herpetology national geographic planet environment croaking male zoology green