![](http://www.alamy.com/thumbs/6/4BD20FA5-9112-419D-B2AF-141812432226/CFAENJ.jpg)
Chorus frog Pseudacris triseriata male vocal sac
Size: 5099px × 3399px
Photo credit: © Roberta Olenick / Alamy / Afripics
License: Licensed
Model Released: No
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