A group of Japanese macaque, also nicknamed snow monkeys, are seeing relaxed in hot baths at the Jigokudani Yaen-koen wild snow monkey park in Jigokudani Valley on February 17, 2018 in Yamanouchi, Nagano, Japan. /VCG Photo

Japanese macaque is one of the few mammals native to Japan. /VCG Photo

Yamanouchi, well known for its hot bath, is a small town outside Tokyo, that attracts lots of visitors since it also is a place where human and monkeys could friendly coexist. /VCG Photo

Instead of huddling together to get warm, these monkeys prefer to stay in the hot waters in the winter. /VCG Photo