Sculpting a Bobble Head Dog

I made a little bobblehead sculpture of Smooth to give my son for his birthday. (Link to YouTube)

 

There are basically two types of bobble head designs: 

1) Head on a loose, bouncy spring, which works for upright human characters.

2) Head on a counterweight, which works best for animals.

With type 2, the trick is to make the head light enough to balance against the lead weight, so I used craft foam for the head. You also have to sculpt the hollow body with enough space for the counterweight to swing freely up and down and side to side. 

All the materials are linked in the description of the YouTube video.