On the rocks

I'm always checking our window wells for critters.  Our egress window is especially deep so I have to look a little closer.   Two days ago I pulled out a vole.  Yesterday I spotted two little frogs so I figured I better climb down.  I got to looking a little closer and all of a sudden one of the rocks I was looking at was not a rock!

Here's what I was looking at...

(Note the slug just above)

Well I got this guy out and they never seem to appreciate what I do.