I have a huge River Toad living in my fish pond out front. I was worried at first that it might be an invasive Cane Toad but managed to ID it by color - beautiful deep green with black spots - and the voice is much nicer.
Been trying for weeks to get a picture of him/her and finally got a really lousy one through the window. This one is at least 6in. long and "sings" with a deep, melodious croak at night when it rains. Second pic might be a smaller one of the same variety.