Trivia: The precis for Croc Dundee is a New Yorker travels to Australia, finds an Australian man, takes him back to New York, falls in love with him, drops her current beau and marries him. This mirrors reality. Linda Kozlowski married Paul Hogan after meeting on this film. He left his wife for her. In the sequel the characters return to Australia for protection, loved it and stayed. Likewise the real life stars moved back to Australia and lived in Byron Bay for 17 years or so.
Trivia: It's evident Foster's Lager was a sponsor, as many signs for their brew are visible throughout the movie. Paul Hogan even endorsed this brand and appeared in advertisements and TV commercials. While Fosters was and is available in Australia, it's relatively rare and not very popular, it's much more so in the US and UK.
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.