Facts about Japanese Macaques

1. 08

   Female Japanese macaques typically give birth to a single infant after a gestation period of approximately 173 days, with births concentrated in spring months.

   Japanese MacaquesMay 14sharereproductionbiologyseasonal
2. 07

   Grooming serves as the primary social bonding mechanism among Japanese macaques, with individuals spending up to 10 percent of their daily time removing parasites and dead skin from each other's fur.

   Japanese MacaquesMay 14sharebehaviorsocialbiology
3. 06

   Thick fur and a specialized layer of subcutaneous fat allow Japanese macaques to survive winters in mountainous regions where temperatures drop below negative 20 degrees Celsius.

   Japanese MacaquesMay 14sharebiologyadaptationtemperature
4. 05

   Northern populations of Japanese macaques migrate vertically up to 2,000 meters seasonally, descending from mountains in winter to find food in lower elevations.

   Japanese MacaquesMay 14sharebehaviormigrationmeasurement
5. 04

   Macaque mothers in Japan carry infants for approximately 16 months before weaning them, establishing strong maternal bonds through prolonged physical contact and nursing.

   Japanese MacaquesMay 14sharebiologyreproductionbehavior
6. 03

   Japanese macaques possess cheek pouches capable of holding food equal to 20 percent of their stomach capacity, allowing them to forage efficiently in mountainous terrain.

   Japanese MacaquesMay 14shareanatomybehavioradaptation
7. 02

   A troop of Japanese macaques can include up to 100 individuals living together in hierarchical social groups led by dominant females.

   Japanese MacaquesMay 14sharebehaviorsocialbiology
8. 01

   In 1963, researchers documented Japanese macaques in Nagano Prefecture bathing in hot springs at temperatures reaching 41 degrees Celsius.

   Japanese MacaquesMay 13sharebehaviortemperatureobservation