Cope's Gray Treefrog. The hind legs are yellowish/orange underneath and it has a distinctly recognizable call.
This little guy has arrived back in our garden pond for the season. It is a Cope's Gray Treefrog. We know it's here by the distinct call heard from the other side of the house, and, evidence left behind in the pond...eggs. It is another amazing miracle to watch over the summer. The eggs will hatch into small tadpoles in less than a week and then we get to watch little frogs develop. I'm setting up our mini aquarium now and we'll keep some to watch until they need and should be free.
Here are some good links:
You can hear its call here.
And find more information here.