Dragon claws - the better to climb up the crags and snatch your prey! Some dragons have talons like raptors. Others have scaly versions of five-fingered hands that are almost humanoid. Some dragons even have opposable thumbs, so they can do calligraphy or fix computers or uncork bottles of wine.
I am still working through these copies and studies of dragon parts, but I hope that I will be able to do a fully detailed, entire dragon portrait sometime soon.
Pencil on sketchbook page, March 22, 2012.