Who is Crocodile Crocodile (Dongo) from The Last Continent: A Discworld Novel and what is their importance?

The ruler of Dijabringabeeralong, a tiny town on the last continent of Fourecks, Crocodile (nicknamed Dongo) walks and behaves like a human being. He wears a grubby shirt and short pants tailored for his anatomy. The citizens of his town are humanoid animals of various types. Crocodile, who speaks with a lisp, runs the only pub in town, where the hapless protagonist, Rincewind the Wizzard, gets drunk on clear beer (the beer in his homeland, Ankh-Morpork, has texture and he cannot drink as much) and passes out. First, however, he loses all of his money and brags that he can shear more sheep than anyone in town. Crocodile insists that Rincewind make good on his bet. In his character can be seen traits of outback folk in the first Crocodile Dundee movie.