godan verb (-ru), intransitive verb
be replaced with new growth; grow anew
Used for hair, fur, feathers, leaves, or other natural growth that falls out and is replaced by new growth. Intransitive; the subject is the thing being replaced.
秋になると、鹿の角が生え変わる。
In autumn, deer antlers are replaced with new growth.
犬の毛が生え変わって、部屋中
The dog's fur is being replaced, and the whole room is covered in hair.