Its habitat is restricted to certain moist deciduous forests and mixed evergreen forests of the east, northeast and southeast. In other countries it prefers evergreen forests of several kinds (Htun et al. 2008, Srivastava and Mohnot 2001). Stump-tailed Macaque is diurnal, arboreal and terrestrial in habit. It is an omnivore (Fooden 1990, Srivastava 1999). It lives in muti-male multi-female group varies geographically from 5-60 (Fooden, 1990). Females reach sexual maturity at about 4 years. Most of the mating occurs in October and November in the wild (Brereton 1994). Gestation period is about six months. Females begin to produce offspring between 4.5 and 5 years and reproduce until about 17 years (Fooden 1990, Ross 1992).

Hoolock Gibbon inhabits tropical mixed evergreen forests of the northeast and southeast of the country. It is an arboreal, brachiator, monogamous and territorial species but come down to cross a stretch of land when tree canopies are discontinuous. The family group may comprise of adult male and female with their offsprings. Hoolock gibbon is mainly frugivorous but its diet also comprise of leaves, flowers and twigs (Ahsan 1994, Feeroz 1991, Feeroz and Islam 1992, Khan 1985, 1987b).

It occurs in a variety of habitats including subtropical, deciduous forests and grasslands. This species is nocturnal and secretive, occurs solitary or in pairs. It lives on ground and in burrows, rarely climbs trees. This Pangolin mainly feeds on insects, particularly termites and ants, besides on various other invertebrates including bee larvae, flies, worms, earthworms and crickets. It digs into ant nests and termite mounds with its large fore claws and extract the prey with its long, sticky tongue. It often coils itself for protection and usually remains silent but rarely utters hisses when alarmed. It breeds during February to July and gives birth to a single young (Challender et al. 2014).

M. javanica can be found in a variety of habitats including forests, thick brush, grasslands, and cultivated areas such as gardens and rubber plantations (CITES 2000). It is primarily nocturnal, solitary and especially feeds on ants and termites. It is a good climber, its prehensile tail adept it well in climbing in trees to get access to termites and ants in tree holes.

At present it only occurs in the mixed evergreen forests of the Chittagong Hill Tracts. It is a burrow-dwelling species, solitary in nature except during mating season when adult male and female share the same burrow and baby follows the mother for an appreciable period. It is predominantly terrestrial but also has the ability for climbing up with its prehensile tail and sharp claws. When threatened, more often it curls its body tucking the only scale-less soft snout under the belly and virtually becoming a ball that not even a leopard can crack open (Khan 1987). The species is capable of emitting foul smelling fluid through its anal gland to deter the predator. The pangolin is insectivorous, feeds mainly on termites, ants and their eggs and often on beetles, cockroaches and worms. Usually breeds in January, March, July and November. Gestation period lasts between 65 to 70 days. Females give birth to a single young, however, occasionally two can be produced (http://www.pangolinsg.org/pangolins/indian-pangolin/).

It is nocturnal and shy, usually found active during dawn and dusk. Herbivorous and consumes a variety of vegetations. Like other hares it is caprophagic. Female gives birth to 1-4 young at a time (Khan 1996, Kamruzzaman 2009).

This species is nocturnal and slow moving animal. Herbivorous and feeds on grasses, leaves, shoots, barks and fruits. Litter size varies from 1 to few more young at a time (Kamruzzaman 2009). It inhabits scrubs and Sal forests, grasslands and edge of the foot hills (Khan 1985).