Quote:
Originally Posted by Varyon
... I had assumed incidental moisture - sweat dripping in from elsewhere on the body, rain, etc - wouldn't come out on its own, which would result in such pouches often having some degree of dampness to them. Considering cheek and marsupial pouches, however, implies you're likely right that this is unlikely to be an issue.....
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Yep, if nothing else there could be specific body adaptation around the opening to prevent sweat and rain (something analogous in function to eyebrows or eyelashes)