A critically endangered Himalayan mole rescued from Sreemangal upazila of the district on Sunday was released in Lawacherra forest under Kamalganj upazila the same night.
Sopon Deb Sajal, director of Bangladesh Wildlife Service Foundation in the upazila, said tea worker Choiton Rikmun captured the tiny black mole while it was digging soil in a canal at Phulchhari village in the evening.
After primary treatment at Bangladesh Wildlife Service Foundation the vulnerable species was released in Janokicherra area under Lawacherra reserved forest.
Generally the rare species is found in the central and eastern Himalayas usually between an elevation of 1,500 metres and 2,400 metres.
It mostly eats earthworms and insects and their larvae, said Tabibur Rahman, assistant conservator of Wildlife Management and Nature Conservation Department in Moulvibazar.
Tabibur said as its population is declining fast, mole is classified as vulnerable on the International Union for Conservation of Nature (IUCN) Red List.
According IUCN, the English name of the species is Himalayan mole or Eastern mole and its scientific name is Euros captor micrura.
The Himalayan mole, generally found in Nepal, Bhutan, India and Bangladesh, is very secretive and nocturnal, it says.
Narayan Saha, former head of Department of Forestry and Environmental Science at Shahjalal University of Science & Technology, said in recent times we do not see such mole as it is losing its habitats due to excessive use of chemicals and fertilizers in tea gardens and croplands.