A warning sign with an exclamation mark tells you to watch out for Biber and frogs.
a yeild sign with the word Biber and a frog is by the road
A red caution sign with a pic of a frog on it that says Biber.
A triangular caution sign with the word Biber on it and a picture of a frog onit.
A street sign with an exclamation point and a frog also has the word Biber on it.