chameleon tongue stuck

Question
My veiled chameleon got his tongue stuck outside of his mouth and could not retract it.  With about an inch and a half sticking out he ran around the cage rubbing it into the floor and corners until it bent back over itself and looked flopped and broken, he was then able to retract it but there was a lot of substrae (bark) stuck to it.  Why did this happen, and could he have broken his tongue?  What can I do to be sure he is ok and what do I do if it happens again?
Thanks,

Answer
Hi Paul. Sorry about that, I got confused between 2 questions! I think I would take him to the vet to be sure that A) he didn't seriously damage his tongue and B) he didn't get impacted by swallowing substrate. He could have broken the bone that his tongue is attached to, or he may have sprained or bruised it. In any case, he needs to be checked out by a vet who knows what he is looking for. Good luck, and sorry about the confusion! Nicole