Cat Tien comprises an important reserve in Vietnam, both for the habitat it protects and the number of species it contains. Although the population of the Javan rhinoceros went into extinction, it is still home to 40 IUCN Red List species, and protects around 30% of Vietnam's species. The park is, however, threatened by encroachment from local communities, illegal logging and poaching. In addition, the park is too small for the larger species found inside it. This has led to either their local extinction or conflict with local people as these animals move beyond the confines of the park. This problem is particularly intense for the park's elephant population, which is prone to wandering and is considered too small to be self sustainable.