 At the end of 2001, there was no more hunting of the Cat Ba Langur.Since the beginning of the conservation efforts, nine langurs have been born and only three have died of natural causes.The greatest populations of the Cat Ba Langur are expected to recover with the appropriate conservation of the limestone habitats.There are currently 3 Cat Ba Langurs held at the Endangered Primate Center in Cuc Phuong National Park, Vietnam

Hunting of the Cat Ba langur used to be common.