Tengku Hassanal Wildlife Reserve is one of the largest wildlife reserves in Peninsular Malaysia covering 605.52 km2 located in the Titiwangsa Mountains, central state of Pahang, Malaysia that was established during the British Colonial Administration.

The lowland dipterocarp forest area contains a very high diversity of birds and mammals, especially primates and bats.

There are a few Wildlife Conservation Centers managed by PERHILITAN in the close vicinity of the reserve.

In the 1960s, Lord Medway led a zoological expedition to Gunong Benom (2,107 m asl) which later attracted many scholars, biologists, and primatologists to research the western part of the reserve called Kuala Krau research station.

[1] Krau Game Reserve was established in June 1923 under Wild Animals and Bird Protection Enactment following growing public concerns for the conservation of wildlife and human-wildlife conflicts amid clearing of forested area to make way for the rubber industry.

Tengku Hassanal Wildlife Reserve is located at 3°42'57.89" N 102°10'33.60" E, in the state of Pahang and in the center of Peninsular Malaysia.

Where the largest geographical space of Krau Wildlife Reserve is within the Temerloh district.

There are five major different forest types with their own subtypes that are acknowledged in Tengku Hassanal Wildlife Reserve.

[2] All major forest types in Tengku Hassanal Wildlife Reserve are high with conservation values.

Among endangered flora species in Tengku Hassanal Wildlife Reserve are Kibatalia laurifolia sp.

Among the endangered and critically endangered species that still can be observed in the Reserve are Malayan Tiger (Panthera tigris jacksoni), Flat-headed Cat (Prionailurus planiceps), Dhole (Cuon alpinus), Sunda Pangolin (Manis javanica), White-crowned Hornbill (Berenicornis comatus), Storm's Stork (Ciconia stormi), Spiny Turtle (Heosemys spinosa), Otter Civet (Cynogale bennettii), Dusky Leaf Monkey (Trachypithecus obscurus), Sunda Slow Loris (Nycticebus coucang), and Malayan Tapir (Tapirus indicus).

The dominant indigenous communities of THWR are Jah Hut and Cheq Wong, who predominantly live in Mukim Jenderak, east of the reserve.

[4] The abundance of interesting features such as scenic mountains and hills peaks, beautiful rivers and waterfalls, and a culturally rich local community can be the catalyst for the Reserve to be an eco-tourism hub for both local and international guests.