His dog has entered the mating season.

His dog started to go into heat yesterday.

The pika lives in the mountains.

I heard a nakiusagi (a type of rabbit) crying in the park.

Smoking increases the risk of carcinogenesis.

That news caused an immediate crisis.

His anger exploded immediately, and the whole room was enveloped in a tense atmosphere.

She goes to school every day with her hair bundled up.

She ran off, her long hair flying.

I hung the laundry under the sun to whiten it by exposure.