I observed this in Ft Lauderdale, Florida. At first I thought it was a Cuban Tree Frog (invasive species). I'm not so sure now of the ID.
maybe? It was pretty large compared to all the eleuths I kept seeing.
I didn't get to see these, but they were calling vigorously (link is to the recording) the morning after a big rain.
Osteopilus is a genus of frogs in the Hylidae family. These species have a bony co-ossification on the skull resulting in a casque. Color varies between uniform brown, brown-gray, or olive with darker markings or marbled with greens, grays or brown, making a distinct pattern. The finger disks are round; the fingers with a reduced webbing; eyes and tympanum are large. Their natural range includes the Greater Antilles and the Bahamas, but O. septentrionalis has also...