How to make a creature puppet that bites and wags when held

If you're in the mood to make a horror movie, complete with creepy creatures and all, then you could make your dreams come true. Just check out this video tutorial on how to make a creature puppet that bites and wags when held. You can make this mechanism using string, craft wood, and hot glue, the action can be controlled with one finger, so the puppet appears to be alive when cradled in your arms. A nifty horror prop for a "pet monster."

Supplies:

Sheet Foam Core (1)
Fake Fur (1/3 Yard)
Sculpey Clay (4-6)
Pen Knife / X-Acto Knife (1)
1 Square Inch Balsa Dowel (1)
1/4 Inch Round Pine Dowel (1)
Hot Glue Gun and Glue (1)
2 Foot Piece of String (1)
Cushion Foam / Car Sponge (1)