It lives in villages with heavy wooded areas and dry crop fields, plantations and in all forest ecosystems having dry grounds. It is terrestrial, fossorial and seeks shelter in caves or in its burrow during the day. The species makes extensive burrows, depending on surrounding soils, with multiple chambers and many exists. Lives solitary (Menon 2004) or in groups of 2-4 individuals including parents. Diet includes mainly vegetable material of all kinds, including fruits, grains and roots (Prater 1980). It occasionally forages on carrion (M.A.R. Khan pers. comm.). It also chews on bones, in search of minerals (such as calcium) that help its spines grow (Gurung and Singh 1996, Prater 1980). The species utilizes both natural plants and agricultural crops as food sources (Schlimme 2000). Gestation period is 240 days (Gurung and Singh 1996). Brood size varies from 2-4 offsprings per year (Prater 1980). Young are born with their eyes open, and the body is covered by short soft quills. The Indian Porcupine is usually monogamous, with both parents being found in the burrow with their offspring throughout the year and average life span is 27.1 years (Schlimme 2000).

It occurs as solitary, in pairs or in small family groups. Mainly arboreal, but rarely comes to the ground. This squirrel is apt in gliding from tree to tree and feeds on soft, fleshy fruits (e.g. Ziziphus, jackfruit), seeds (e.g. tamarind), shoots, buds and leaves. It makes its drey in tree hollows. In each litter 2-3 young are born. The squirrel is found in mixed evergreen forests, montane forests, oak and rhododendron forests (Duckworth et al. 2008). Populations can be found in primary forests as well as secondary, degraded forests and scrubby habitat. It is nocturnal and almost purely arboreal.

In the Bangladesh context, its habitat is restricted to the cities, towns and villages in the Revenue Divisions of Rangpur, Rajshahi and Khulna. Diurnal and semi-arboreal. It lives in the villages and towns of the districts under the Divisions of Rangpur, Rajshahi and Khulna. It prefers gardens over paddy and other crop fields. Feeds almost entirely on fruits, vegetables, leaves, boiled rice and bread offered by people, and some small animals. It is a very active animal and builds a huge nest called drey in canopies of tall trees. It can cause damage to cultivated fruits like guava, sapota, mango, etc.

It inhabits forested hill and foothills ranging up to 800m above mean sea level. It occurs in mixed evergreen forests in Bangladesh. This squirrel is terrestrial. It is a diurnal and arboreal species though it also forages on the forest floor. It feeds on fruits, vegetables, nuts and latex from tree bark as well as nectar.

The species lives in bamboo thickets, forests, grassy areas, and gardens in hilly or mountainous regions, at elevations up to 4,000 meters. They can burrow different types of soil, from loose well drained to hard and stony soil (Carleton and Musser 1984, Nevo 1999, Nowak 1999). It feeds on young grass, leaves and bamboo roots and shoots. Usually spends daytime in its holes and burrows, coming out at evening and forage widely through bamboo bushes (UNDP Bangladesh 2008).

It lives in forests, in well-wooded villages and semi-urban habitats with plantations bordering forests. A few pairs live in Dhaka city too. It is diurnal and arboreal but also occasionally comes to the ground. It occurs as solitary animal or in pairs. This squirrel feeds on leaves, fruits, vegetables, nuts, barks, latex, flowers and nectar. It loves to drink date juice extracted during winter. It builds its huge drey in tree tops with dry grass, leaves and twigs having an entry on one side (Khan1982, 2015, Khan 2008, Kamruzzaman 2009).

This species is diurnal. It is arboreal but also spends time on the ground. Feeds on leaves, fruits, seeds, nuts, insects (Francis 2008, Kamruzzaman 2009). Unlike other squirrels, it crosses long distance or run away through ground when disturbed. It is found in mixed evergreen forests but also seen in plantations and disturbed habitats nearby.

The species has been found at upland community households.

It is one of the most adaptable mammals of Bangladesh and a commensal to human beings. This species is terrestrial, burrower, nocturnal and crepuscular It is an apt swimmer, climber and digger. Usually consumes vegetables, grass, roots, grains, tubers, seeds, leaves, fruits of all kinds and also invertebrates There is no fixed breeding season for it but most of it takes place when grains are ready for harvesting (Francis 2008, Khan 1982, 1985, 1986, 2015, Khan 2008).

This species is terrestrial, burrower and crepuscular. Usually aggressive; erects piles of long hairs and grunts when excited. Feeds on variety of foods but usually vegetables, grass, roots, grains, tubers, seeds and also invertebrates (Chakma 2009). It inhabits a wide range of habitats including forests, agricultural lands and suburban areas. Prefers cultivated land (Chakma 2009). It is a known pest of all cultivated crops and stored grains (Khan 1987).