Japanese macaques live in matrilineal groups with females living in their birth group all their lives while the males leave and join different groups to prevent in-breeding.
Mom with baby Source: Wikipedia
Their diet includes plants and herbs, fruit, nuts, insects, seeds, roots, and even fish. In the northern most areas they add on the pounds in the fall, storing fat to last them through the winter. These macaques also live in sub-tropical forests in their southern most range.
And believe it or not, a group of Japanese macaques were transported to Texas where they had to learn how to cool off instead of warm up, and having some fun at the same time. Check out this video.
For a couple more videos and more info, click here and here.