T-Rex Scare

Ok, I was watching a youtube video about a professional haunt and one, can't remember which one, had a huge T-Rex head "eating" at people... I thought this would be a great addition to a "Jurassic" themed haunt. Anybody have any idea on how to create one of these? I thought of making it out of foam, and with me and being cheap, making it a puppet, instead of animated... All ideas would help!
THX,
Bailey Brewer, THB
:)

Sounds like Erebus Haunted House to me!

http://youtu.be/EtnQm5UjFYg?t=3m14s

Make a big one of these
http://www.skladstadion.com/wp-conte...%20backhoe.jpg

And that covers your motions. then make a big T rex head out of foam
Maybe not this big
http://www.danielswoodland.com/themi...ex_playset.php
but it gives you the idea.
Id fiberglass it to finish (after sealing).
Allen H

Thanks, Really helped!