The squirrel has not fared well in Christian symbolism. Because it stores up food, Christians considered it a symbol of greed. In the Middle Ages, the squirrel was associated with the devil because of its speed and rapid, darting movements. In Germanic mythology, the squirrel lived in Yggdrasil, the world ash tree, and was sacred to Thor, the god of thunder and rain. If you dream of a squirrel, it's a sign that you're "squirreling" away information but are not making practical use of it. As squirrels are always busy and quick moving, squirrels can also indicate that you're focused on a particular task and will finish it as quickly as you can. However, this busy-ness needs to be used productively, as otherwise you may end up being endlessly busy but have little to show for it.