Toque macaque toque macaques in Sri Lanka. The results indicated that an epizootic dengue virus was active among the macaques. A single epizootic had taken place between October 1986 and February 1987 during which 94% of the macaques within the 3 km2 study site were exposed to the virus. The epizootic was highly focal in nature because macaques living 5 km from the study population were not exposed to the virus. The transmission of dengue viruses among macaques in the wild may have important public health implications. Toque macaque The toque macaque ("Macaca sinica") is a reddish-brown-coloured Old World monkey endemic to
White-cheeked macaque not yet been determined, it is likely threatened by poaching, deforestation, and increased human development of its habitat, much like the other primates which inhabit the area. The white-cheeked macaque was discovered and described in 2015, making it one of the most recently discovered mammals and one of the most recently discovered primates. While specimens of the creature had been observed and known for many years prior, they were believed to be members of the species "Macaca assamensis", the Assam macaque. After footage captured on a series camera traps in Tibet revealed numerous physical differences between the Assam macaque and