Valmiki National Park was established in 1989 and covers an area of 340 sq km. Previously, it was a wildlife sanctuary covering 550 sq km until 1978. It is located in West Champaran district of Bihar.

The park is famous for Royal Bengal Tigers, rhinoceros and bison. A huge number of flying foxes, a type of bat, are also observed here. It has vast grasslands and a large number of wild cats. The best time to visit is during winter.

Established in 1992, Kaimur Wildlife Sanctuary covers approximately 1,350 sq km. It is located in the Kaimur Hills range in Kaimur district of Bihar, where beautiful lakes are present.

It is the largest wildlife sanctuary in Bihar and is famous for Blackbuck. Winter is the best time to visit because many species, especially birds, can be seen here.

The area is also known for historical terracotta paintings, caves and other natural attractions.

Rajgir Wildlife Sanctuary is located in Nalanda district of Bihar. It was established in 1976 and covers approximately 150 sq km.

Various medicinal plants, along with wildlife such as deer and leopards, make this sanctuary important and distinguish it from others.

As its name suggests, Vikramshila Gangetic Dolphin Wildlife Sanctuary is famous for its dolphins. It was established in 1991 and is located in Bhagalpur district of Bihar.

Apart from dolphins, the sanctuary has rich aquatic biodiversity. It covers approximately 55 sq km and is an important habitat for the endangered Gangetic dolphin.

Established in 1987, Kanwar Lake Bird Sanctuary is located in Begusarai district of Bihar and covers approximately 70 sq km.

Kabar Taal Lake increases its importance and is one of Asia's important freshwater oxbow lakes. The area is famous among bird lovers and provides habitat to thousands of birds.

Bhimbandh Wildlife Sanctuary was established in 1975 and covers approximately 700 sq km. It is situated in Munger district of Bihar.

Bhimbandh is situated south of the Ganges River, at the northern edge of the Chota Nagpur Plateau and west of the Santhal Pargana. It is surrounded by densely inhabited non-forestry areas.

Several hot springs are found in the valley and foothill areas, including Bhimbandh, Sita Kund and Rishi Kund. The hot springs maintain nearly the same temperature throughout the year.

Bhimbandh springs have temperatures ranging from 52°C to 65°C and have significant geothermal energy potential.

Established in 1976, Gautam Buddha Wildlife Sanctuary covers approximately 140 sq km and is situated in the Gaya district of Bihar and Koderma district of Jharkhand.

Leopard and elephant are among the important animals found in the sanctuary.

The sanctuary includes portions of the Lower Gangetic Plains moist deciduous forests and Chota Nagpur dry deciduous forests. Plant communities include dry and moist sal forests, ravine thorn forests and tropical dry riverine forests.

Wildlife includes tigers, leopards, wolves, sloth bears, chitals, chinkaras and many species of birds.

Nagi Dam Wildlife Sanctuary is situated in Jamui district of Bihar. It is the smallest bird sanctuary in Bihar and covers an area of approximately 2 sq km near Jhajha.

Birdwatchers can identify a large variety of migratory birds here.

The Nagi Dam (791 ha) and Nakti Dam (332 ha) are two sanctuaries located close to each other and can be considered as one important bird area.

Nagi is approximately 7 km from Jhajha in Jamui district, while Nakti is a further 4 km from Nagi. Both sanctuaries occupy similar habitats surrounded by rocky hillocks formed by damming streams.

The waterbodies are relatively deep with clear water and were constructed to supply water to local farms. Cultivable land is located adjacent to both waterbodies.

Udaypur Wildlife Sanctuary, also spelled Udaipur, is located in West Champaran district of Bihar. It was established in 1978 and covers an area of approximately 8.74 sq km.

The sanctuary is predominantly a wetland located on an oxbow lake in the floodplain of the Gandaki River. It is home to a variety of resident and migratory water birds.

The sanctuary contains areas of swamp forest, dry riverine forest and khair-sissoo forest (Acacia catechu-Dalbergia sissoo).

The sanctuary has a rest house. The nearest town and railhead is Bettiah. It is under the authority of the Deputy Director of the Champaran Forest Division, headquartered in Bettiah.