The Giant Toad (Rhinella horribilis) is a massive toad occuring from South Texas down into Mexico, Central America and along the northwest coast of South America (west of the Andes).
|Giant Toad (Rhinella horribilis)|
In Texas, this species is restricted to the lower Rio Grande Valley, occurring along the river and inland from Laredo down to the mouth of the Rio Grande. In South Texas it is a fairly common species.
|Adult Cane Toad|
These are massive toads. Adults have exceeded 5 pounds in mass and been over 15 inches long.
The call of the Giant Toad is actually what you would expect for a huge toad. Toads generally have trilled calls. Smaller toads have faster, high-pitched trills and big toads have slower, low-pitched trills. The bigger the toad the lower pitched the trill. The trill of the Giant Toad is so slow and low pitched that it is drum-like. This individual was from north of Aguas Zarcas, Costa Rica.
Here's a slightly longer section of call from an individual near Caño Negro, Costa Rica.
Giant Toad call from Caño Negro, Costa Rica
And here's my only recordings of Texas Giant Toads. This is a chorus of individuals calling from a resaca in Hidalgo County, Texas.
Giant Toad call from Hidalgo County, Texas
Here is a short recording of some Giant Toads from Campeche, Mexico
© Chris Harrison 2017