Teensiest Frog I Have Ever Seen

I flipped on the outside light while I was writing last night hoping for some interesting moths. Truth be told I was really hoping for a Luna Moth, they have been reported south of me. When I went out to check what was happening in the darkness, I found a weensy green frog on the deck railing. It was maybe 1/2 inch long, and that may be too generous. That is a begonia leaf in the background. I have no idea what it is. Do you know?

Green Frog

On a hike in Wawayanda State Park, I walked around a vernal puddle in the middle of the path checking for tadpoles only to discover a frog had taken up residence. It did not shy away even though there were many people in the woods. I originally thought it was a Wood Frog, but it did not have the mask, so I have come to the conclusion it is a Green Frog. Look at that ear drum.

There are three things that struck me when I read the description in the field guide. "Males have swollen thumbs." Why thumbs? I guess this one is female, her thumbs look normal. Their voice is like "the twang of a loose banjo string" I have absolutely no idea what that would sound like. Would most people? And, "They seldom scream in alarm when caught." Do other frogs scream in alarm?