Primates include rhesus macaque and Hanuman langur. The rhesus macaque has 21 pairs of chromosomes. Research is primarily performed in non-human primates such as the rhesus macaque. The rhesus macaque is well known to science. An evil man threw tobacco into Macaque Rhesus's eyes. They are known for subsistence hunting of langur and macaque monkeys. The Japanese macaque is the northernmost-living nonhuman primate. The Barbary macaque, "Macaca sylvanus", was the first nonhuman primate to contract WNV. Triangulation of human, chimpanzee, and macaque sequences showed expansion of gene families in each species. Contrast this with an observed group of macaque monkeys. It has largest population of two endangered species- lion-tailed macaque and nilgiri tahr. Only the Tibetan macaque and a few of the gray langurs can rival its size. The sanctuary is a refuge of the endangered lion-tailed macaque. The pig-tailed macaque also occurs. The term "sale macaque" (filthy monkey) was occasionally used as an insult.