Northern Pig-tailed Macaque (Macaca leonina) lives in tropical rainforest across Southeast Asia. It feeds on fruits and insects. Its conservation status is Vulnerable.
Fascinating facts about the Northern Pig-tailed Macaque
- Troops can swell to more than 150 individuals, yet they constantly break into smaller foraging parties before reuniting for long-distance travel. This fluid splitting lets the macaques exploit scattered food patches without exhausting resources. Such flexible social engineering is a direct response to fragmented habitats and uneven fruit availability.
- The IUCN lists the northern pig-tailed macaque as vulnerable and declining, a status driven by agricultural expansion, logging, hunting, and a booming illegal pet trade that involved 291 individuals in Vietnam between 2015 and 2019. These pressures shrink forest cover, force macaques into crop fields, and expose them to disease.
- Males tip the scales at over eight kilograms, while females stay under six kilograms, making body weight the clearest sign of sex. females lead group decisions.
- Their home ranges stretch anywhere from 62 to 828 hectares. When fruit is scarce, macaques expand toward human settlements, but in fruit-rich seasons their home range increases as they settle near specific fruit species within forest habitats.
- In Cambodia's Keo Seima Wildlife Sanctuary, researchers counted an increasing population of almost 4,000 macaques.
Sources
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At a glance
RangeSoutheast Asia
HabitatTropical rainforest
DietFruits and insects
About the Northern Pig-tailed Macaque
In the lush canopies of Southeast Asia's tropical forests, the Northern Pig-tailed Macaque navigates with effortless agility, its slender limbs and prehensile tail weaving a sinuous path through the dense foliage. As it moves, the macaque's expressive face betrays a keen intelligence, its eyes gleaming with a sharp awareness of its surroundings, while its nimble fingers deftly pluck fruit and leaves from the trees. With a social complexity rivaled by few other primates, this remarkable creature thrives in a delicate balance of cooperation and competition, its very existence a testament to the enduring richness of the forest ecosystem.
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