Continuity mistake: When Dundee enters his NY hotel for the first time, he is smoking and puts the ashes on top of his hat because he cannot find anywhere else to put them. In the next shot, the ashes are no longer there.
Continuity mistake: When Sue, Mick and Richard are in the restaurant, first Sue is holding her menu, the next shot she is holding Richard's hand, the next shot she is holding the menu again.
Continuity mistake: At the beginning when the helicopter lands, the helicopter's shadow goes out toward the rear right of it (from the pilot's perspective), but when Sue grabs her bags and walks to Walter, the shadow is now cast to the front right. Since Sue got out and was standing next to it, the helicopter did not move in the meantime. (00:03:15)
Continuity mistake: As Mick gets up after Nevil leaves, he has a white tin cup in his hand. A second later, after the angle change, it's suddenly gone.
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.