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Hyla versicolor
sticky little guy!
back yard in NH
This could either be a Gray Treefrog or a Cope's Gray Treefrog. They look the same and inhabit the same range(mostly.)
What's the difference...mainly their call. Many herpetologists (people who study reptiles and amphibians) have a hard time differentiating the two without molecular analysis. I am assuming that since you are in NH, the Gray is more common, but down here in Tennessee, the Cope's is encountered. Hope that is helpful, this is also a good site to check.
http://animaldiversity.ummz.umich.edu/si...