Programs used in the making of 3D dino documentaries

[Amtoine Grant <ajgrant@eastlink.ca>]

Hey, I'm wondering if anybody here knows what program(s) were used in 
the making of any of the 3d dino-documentaries such as Walking With 
Dinosaurs, When Dinosaurs Roamed America, Jurassic Park, Disney's 
Dinosaur, etc. I'm hoping to gain some insight in to some of the 
processes used to model & animate these productions.
An on that note, if anyone here is a 3d animator/modeler and/or 
programmer, I'd also like to know how or if programming could be 
implemented in a 3d dinosaur as far as automating a walk sequence to a 
point where the movements of the 3d model adapt to the terrain and 
more. I know there's a program called AI implant, but I'm working on a 
Mac, so I'm going to need to go another route. Any help will be GREATLY 
appreciated.