You can expect to see many more insects and other small organisms than larger animals. A walk into the jungle offers a fascinating insight into the richness and diversity of micro fauna. Over 1000 species of butterflies have been recorded in Taman Negara.
There are over 600 species of birds in Malaysia and over 300 species have been recorded in Taman Negara. Some real rarities have been recorded here.
As many as 250 species of birds have been identified so far at Taman Negara. The most easily seen and heard are the hornbills. Fireback pheasants are often flushed out when you’re walking the jungle trails while fishing eagles and kingfishers usually flit along the riverbanks. The Sungai Tahan is a favourite habitat of the masked finfoot. Other exotic species to be found here include the broadbill, drongo and blue-throated bee-eater.
Micro Fauna
Birds And Bats
Larger animals that can be found inhabiting the lowlands of Taman Negara include the Malaysian gaur or seladang, sambar deer, barking deer, wild pigs, tapir, elephants, tigers, leopards, sun bear, and the sumatran rhinocerous. However, sightings of these mammals species are quite rare; due in part to the density of vegetation and the shy nature of these animals.

The animal kingdom is well represented in Taman Negara. Visitors will probably hear them and locate their tracks more than they will see the creature themselves. The forests provide natural camouflage for most animals, this makes them difficult to spot.

Some 200 species are known to live in Taman Negara from the smallest shrews to the largest elephants. Monkeys are most commenly seen by visitors to Taman Negara. Long-Tail Macaques can often be spotted along the river. Tigers live within the thick jungles of Malaysia which includes Taman Negara and belong to the Indo Chinese tiger family (Panthera Tigris Corbetti species). These tigers are protected as they are endangered and are therefore rarely seen.

Refer to "http://www.malaysiasite.nl/tigers.htm" for more info on the Malaysian Tigers.
Reptiles & Amphibian
More than 100 species of both snakes and frogs. Crocodiles & Alligators, Snakes, Lizards, Turtles & Tortoises. They are an ancient group of animals that have been on earth for over 300 million years. There are more than 10 million different kinds or species in the world. About 6500 "cold blooded" reptile.
Lizards are familiar sight, they hunt mainly by day in the open and have no poisonous bites.

Turtles & Tortoises
They appear in earth over 200 million year ago. They live in many places from deserts to rainforests and the sea, and across tropical and temperate zones of the world.

Crocodiles & Alligators
The 22 species of crocodilians which scavenge meat from any dead carcass left by another hunter. They live in tropical regions, in or near water, and spend much of the day basking in the sun to keep warm. The powerful tail and rear limbs are used to propel the animals through water. The commonly food are frogs, snakes, lizards, birds and mammals.
Poisonous Snakes
There are nearly 2400 species of snake around the world. One-sixth are poisonous. They will bite in self defence. It is best to treat all snakes with respect and to take care when walking in places where snakes live.

Non-Poisonous Snakes
The vast majority of the world's snakes are not poisonous. They live in quiet, secretive lives in wild and remote places such as jungles, swamps and deserts. They hunt in small scale such as insects, spiders, worms, mice, frogs and rarely come into contact with people. The smallest are as short as finger and the giant species such as pythons and anacondas. Snakes never stop growing and growth rate slower when they get older.
At 0830 hrs : From Mariamman Building, No. 2 Jalan Hang Kasturi, Kuala Lumpur.