Sometimes used for declining species to mimic their breeding environment.
A no toad zone.
Um sinal muito interessante.Um abraço e óptima Quarta-Feira.http://andarilharar.blogspot.pt/
What an odd sign... I hope you were careful and didn't step on any!
Cool! Maybe it just means biological materials, preserved specimens of some kind for science education, research, or the like? Nice find anyway!
I want that sign!
Funny sign, I would not understand it if I would see it. And I'm afraid (I hate), frogs, I would not go anywhere near.
It's a mystery!
That is a funny sign. Never seen a caution frogs sign. It is usually deer.
What does it mean?My SIGNS, SIGNS
Funny sign !
It is about invasive species, I assume.