Haven't wired any skeletons yet, but it is something I've wanted to try. I have a small collection of skulls I've found at work (a couple from my yard, gophers), and once in awhile I'll find a complete skeleton. Someone I used to work with had a fox skeleton they wired and glued together. It looked really neat! I do not have pictures of it though.
Look for a Dremel drill. You can get some TINY bits for it that will probably work for these purposes. I have a Dremel and all kinds of bits I use to customize model horses. Have been able to use them on the models that are about 3 or 4 inches tall.