Hahahaaa! Well done indeed! Jeeez, that spider was kinda drunk when I played with it. Whahaahaahaa! But, it always came back, so I guess it is a very well trained spider. Hahahaaa! And, it didn't stop eating. Man, she was hungry! Hahahaaa!
Yeah, very nice animation and interaction. I think it is written in Java Script. They are Flash projects. If you go to the home page, you can find code from one of his projects (look under 'Other Projects'.
I think in DBPro, you would need a boned spider model (with animation), and then manipulate it using the limb commands. Add some shader for the shadows, add code to change the thickness and length of the various parts of the spider...
Slayer rules!!! Yeaaah, man!