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Anaxyrus terrestris
These toads are everywhere in my back yard. Are they poisonous?
Northwest florida
Well, I'll add my vote to Hunter's ID (beat me to it :P) But here is more reading on the toad:
http://www.wec.ufl.edu/extension/wildlif...
I don't know if all but many toads produce "poison" from those kidney shaped glands behind the eyes. It oozes from the skin as a defebce mechanism, so unless you lick them or put it in your mouth is not a problem, of course pet's are vulnerable if they bite them. For this one it states: "The Southern Toad has smaller kidney-shaped paratoid glands, which secrete a substance that may be irritating to mucous membranes but is not toxic." Don't know if that applies to pets also.
The venom from the partoid glands of this toad is weak. It wouldn't hurt you much unless you ingested it, and even then its effects would probably be mild. It might irritate your skin slightly, so washing your hands after handling it would probably be a good idea. Toads are good to have around, as they eat many bad bugs!