Beware of Frog

I was looking at Justin's blog post the other day about the mutant bird sign and it reminded me of this sign I saw in Germany. I found it really weird as I've never seen anything like it before. First, I don't recall ever seeing a triangular sign with a red outline in the US. Second, I've never seen a road sign with a frog in it. The shape of the sign made me think it was a "beware of" sign, but a frog seems like a strange thing to be cautious of unless, of course, it's a poisonous frog. But, I don't think Germany is known for poisonous frogs.

Anyways, after some research I found out the sign meant that road was a frog crossing. Apparently, the road ahead is used by migrating frogs (I didn't know frogs migrated...). Still, you don't normally see warning signs for such small animals, usually you see them for deer or other larger animals. I just thought it was a really interesting sign and wanted to share it. I guess the moral of the story is when you're in Germany watch out for migrating frogs on the road.