BOWTRUCKLE

"The Bowtruckle is a tree-gaurdian creature found mainly in the west of England, southern Germany and certain Scandinavian forests. It is immensely difficult to spot, being small (maximum eight inches in height) and apparently made of bark and twigs with two small brown eyes.

The Bowtruckle, which eats insects, is a peacable and intensely shy creature but if the tree in which it lives is threatened it has been known to leap down upon the woodcutter or tree-surgeon attempting to harm its home and gouge at their eyes with its long, sharp fingers."

-JK Rowling