Two kinds of primates live on the island nation of Japan - Homo sapiens and Macaca fuscata. Although the humans and the monkey differ in many ways , they have at least on thing in common - they both love hot tubs. These days, the human primates have largely taken over the land. However, they have still left a little space, mostly in the rugged mountains, where Macaca fuscata, the Japanese macaques, hang on.