Rhesus macaque baby. The baby was later found dead in a well. Though monkeys are known to attack people, enter homes or damage property, this reported behaviour was unusual. The rhesus macaque is well known to science. Due to its relatively easy upkeep in captivity, wide availability, and closeness to humans anatomically and physiologically, it has been used extensively in medical and biological research on human and animal health-related topics. It has given its name to the Rh factor, one of the elements of a person's blood group, by the discoverers of the factor, Karl Landsteiner and Alexander Wiener. The rhesus macaque
Yakushima macaque Yakushima macaque The Yakushima macaque ("Macaca fuscata yakui") is a subspecies of Japanese macaque that is indigenous to Yakushima Island (Kagoshima Prefecture). It is also known as the Yaku macaque. Compared with "M. f. fuscata" which lives from Honshu to Shikoku and Kyushu, Japan, these individuals are smaller, stockier, have black hands and feet, and a thicker gray coat. Adults have darker fur than infants and juveniles. Adult males have a special feature called a “momoware” (split peach) which parts their hair in the center from right to left. Females bear a single offspring between March and May, every two