抜ぬけ替かわる

godan verb (-ru), intransitive verb

be replaced by falling out; shed and regrow; molt

Describes the natural process where something (hair, feathers, skin, teeth, etc.) falls out and is replaced by new growth. Often used for animals shedding or molting.

• 春はるになると、犬いぬの毛けが抜ぬけ替かわる。

  In spring, the dog's coat sheds and is replaced.

• 子こどもの歯はが抜ぬけ替かわる時じ期きです。

  It's the time when children's baby teeth fall out and are replaced by permanent ones.