Australia, Green tree frogs (which this guy is, are pretty common over most of Australia). Most of my resident tree frogs don't hang around my pond prefering to live in the guttering on the roof, inside my bird aviary (yes one decided it was a good place and kept going back no matter how much I moved it outside the aviary), or find hidey holes on the back patio like Foo above. The frogs usually have a dip in the dogs water bowl, and if the back door of the shed gets left open the frogs do go for a swim in my fiah tanks. Some of my more brazen green tree frogs even come inside hunting food and have to be relocated back outside the next day or preferably that night. I love frogs but household fluff drys them out and kills them and even though I am VERY careful about cleaning products I don't trust any of them when frogs are involved. And frogs are like mice and snakes, able to squeeze into the most unlikely crack or crevice.
Ps If you want to see more pics of my local frogs check out Local Residents in the Amphibian and Invertebrate section of this forum.