Photos: Japanese Macaque Monkeys Groom Themselves in Hot Spring

A Japanese Macaque - or Snow Monkey - soaks in a hot spring at a snow-covered valley in Yamanouchi town, central Japan, Jan. 20, 2014.

Issei Kato—Reuters

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Japanese Macaques - or Snow Monkeys - groom each other in a hot spring at a snow-covered valley in Yamanouchi town, central Japan, Jan. 20, 2014.

Issei Kato—Reuters

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Japanese Macaques - or Snow Monkeys - groom each other in a hot spring at a snow-covered valley in Yamanouchi town, central Japan, Jan. 20, 2014.

Issei Kato—Reuters

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Japanese macaque monkeys, known as "snow monkeys," take an open-air hot spring bath as snowflakes fall at the Jigokudani Monkey Park in the town of Yamanouchi, Nagano prefecture on Jan. 19, 2014.

Toshifumi Kitamura—AFP/Getty Images

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Japanese Macaque monkeys groom each other and relax in a hot spring at the Jigokudani, or Hell's Valley Monkey Park on Jan. 8, 2014 in Yamanouchi, Nagano, Japan.

The Asahi Shimbun —Getty Images

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A Japanese macaque monkey, known as a "snow monkey," takes an open-air hot spring bath while snowflakes fall at the Jigokudani Monkey Park in the town of Yamanouchi, Nagano prefecture on Jan. 19, 2014.

Toshifumi Kitamura—AFP/Getty Images

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Japanese macaque monkeys, known as "snow monkeys," take an open-air hot spring bath at the Jigokudani Monkey Park in the town of Yamanouchi, Nagano prefecture on Jan. 19, 2014.

Toshifumi Kitamura—AFP/Getty Images

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