Crab-eating macaque Crab-eating macaque The crab-eating macaque ("Macaca fascicularis"), also known as the long-tailed macaque, is a cercopithecine primate native to Southeast Asia. It is referred to as the cynomolgus monkey in laboratories. It has a long history alongside humans; they have been alternately seen as agricultural pests, sacred animals in some temples, and more recently, the subject of medical experiments. The crab-eating macaque lives in matrilineal social groups with a female dominance hierarchy, and male members leave the group when they reach puberty. They are opportunistic omnivores and have been documented using tools to obtain food in Thailand and Myanmar. The
Crab-eating macaque and "M. f. condorensis" is vulnerable. All other subspecies are listed as data deficient and need further study; although recent work is showing "M. f. aurea" and "M. f. karimondjawae" need increased protection. One concern for conservation is, in areas where "M. fascicularis" is not native, their populations need to be monitored and managed to reduce their impact on native flora and fauna. The genome of the crab-eating macaque has been sequenced. On 24 January 2018, scientists in China reported in the journal "Cell" the creation of two crab-eating macaque clones, named "Zhong Zhong and Hua Hua", using the complex