Covering nearly 7764 hectares, the predominant vegetation was originally garjan forest, but illegal logging and encroachment for cultivation resulted in a fragmented and degraded habitat.

By 2003, secondary scrub covered approximately 44% of the Sanctuary, but various replanting projects have been undertaken with donor support.

[4] Chunati Wildlife Sanctuary is a major corridor for the movement of Asian elephant between Bangladesh and Myanmar.

[5] Mammal species in the Sanctuary include muntjac deer, fishing cat, wild boar and Malayan porcupine.

Birds include the black-rumped flameback, coppersmith barbet, chestnut-headed bee-eater, Asian green bee-eater, greater coucal, house swift, spotted dove, black drongo, jungle myna and Asian pied starling[6] The park is under the jurisdiction of Bangladesh Forest Department of the Ministry of Environment and Forest (MoEF), and is managed by them in cooperation with local communities.