Also located in Vietnam's south is the Cat Tien National Park, forming 720 kmÂ² of tropical rain forests. While the park's fauna may be under threat, it is impressive nonetheless. Large animals such as the Javan rhino, Asian elephant, bear species and buffalos can be spotted on Vietnam holidays here. And the smaller animals are here in impressive numbers too, with species of gibbon, macaques, deer and shrews all habituating within the park. Birds too, are remarkable in their numbers, with beautiful species such as white-winged ducks, Siamese firebacks, great hornbills and black eagles all residing there.