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Canyon treefrog (Hyla arenicolor) at the Arizona-Sonora Desert Museum.
Arizona treefrog (Hyla wrightorum) at the Arizona-Sonora Desert Museum.
Lowland burrowing treefrog or northern casque-headed frog (Smilisca fodiens) at the Arizona-Sonora Desert Museum.
Marbled treefrog (Phrynohyas venulosa) at the Detroit Zoo.
Cope’s gray tree frog (Hyla chrysoscelis) at the Detroit Zoo.
Pine Barrens treefrog (Hyla andersonii) at the Toledo Zoo.
An hourglass treefrog (Dendropsophus ebraccatus) at Zoo Atlanta.
Joel is a popular keynote speaker with conservation, corporate, and civic groups.
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