Factual error: Mick's hat has genuine crocodile teeth set into the hat band. It would be confiscated and destroyed by US Customs on his arrival in the USA.
Factual error: That is not a crocodile that attacks Sue. It more closely resembles an American alligator - the squat, rounded snout gives it away. Australian crocodiles have a much sharper, more angular snout. There are other tell-tale physical features, most notably the placement of the alligator's teeth when it closes its mouth, but that's the main one.
Factual error: Linda Koslowski dips her canteen in a creek and a full grown crocodile grabs it and tries to drag her into the water - and she holds it off in a tug of war until our hero Mick arrives and kills it. Nonsense. A slightly built woman has a much chance of holding her own against a 1200kg croc as I have of flying to the moon. She'd be croc food before he even heard the splash - a croc that big could take a 1000kg buffalo without pausing for breath, never mind a small woman.
Factual error: Not only do we have to question why the croc doesn't just pull the woman into the water, which is covered by another mistake. But, why does the strap on the canteen not break during this scene as well - it's probably got about 1500 pounds pulling on it.
Suggested correction: You can tell by the shape of the snout and the ridges above the eyes that, although animatronic, it is meant to be a Marine Crocodile that is native to Australia. It doesn't resemble an American alligator, which doesn't possess those pronounced ridges. Also, freshwater crocodiles can be seen in the boat ride scene where Mick motions for Sue to lean up off the edge of the boat. They have the narrower, angular snout that you referenced.
The placement of the alligator's teeth when it closes its mouth shows that it is more like an alligator than a crocodile. In fact, the animatronic puppet is a bizarre mish-mash of physical characteristics of both crocodiles and alligators.