Some of you may want to try giving large night crawlers to your Tegu's. My adolescent Arg. B&W girl has a great time flinging crawlers around and finally eating them. Of course watching is a hoot too! I don't feed her many of them, just a couple or three once a week. I suspect the worms movement is what triggers such a violent feeding response.
ye i gave my monitor worms b4 and he loved them. its jus so funny how curious they are until they realize its edible and devour it