Killer Crocodile (1989) on Netflix

Plot summary

On a tropical island, Kevin, Mark, Bob, Pamela and the rest of an ecologist team are traveling through a polluted wetland, tracing the pollution to barrels of radioactive waste dumped in the water. Judging the waste too dangerous to examine, they camp in the woods nearby. Their guide Conchita and the group's dog, Candy, disappear. The next morning the team docks at a village and asks the local official, Judge, for help; he says he can do nothing, and Pamela tells him he has been paid off by the dumping company. Back in the swamp, their boat runs into mud, and Pamela finds Conchita's body in the water. Hunter Joe, shown the remains, says a crocodile killed her.