The eastern spadefoot, Scaphiopus holbrookii, is not a true toad but a burrowing amphibian found across the eastern United States, named for the hard spade on its hind feet. It spends most of its life underground and emerges to breed in temporary pools after heavy summer storms, when males call to attract mates. Recordings of that brief chorus circulate among wildlife enthusiasts, educators and sound designers, and the clip is now reused online for pond scenes, frog identification and ambient nature soundboards.