in another country people are eating monkey brains i believe

A group of student activists travel from New York City to the Amazon to save the rainforest. However, once they arrive in this vast green landscape, they soon discover that they are not alone… and that no good deed goes unpunished.

Four friends head into the jungle to locate a lost professor but instead face off against treasure hunters who are torturing and killing natives.

A biology research group, lead by Johan Giru and his wife Sofia, go to Lavayetty Island and encounter evil monkeys rotting from the inside out and becoming worm infested, a primitive tribe and a supernatural creature.

Eating peanuts causes a workman to act like a monkey.

A man behaves like a monkey after its brain is transplanted into him.