please write your name to help save the bornean orangutan it is an very important animals because orangutans play a critical role in seed dispersal, keeping forests healthy. Over 500 plant species have been recorded in their diet. This means that they help the plants’ distribution. There also a primate which is one of 5 animals we need to survive because Primates may be our closest link when it comes to understanding human history, but their true worth lies in the ecological role they play in the world. In tropical and subtropical climates, primates are what is known as a keystone species. They essentially act as the forests’ gardeners, by dispersing seeds and pollen through their daily habits such as eating.