成せい犬けん

noun

adult dog; fully-grown dog

Refers to a dog that has reached physical maturity, typically after one year of age. Often used in contrast with 子犬 (puppy).

• このドッグフードは成せい犬けん用ようです。

  This dog food is for adult dogs.

• 子こ犬いぬのときと比くらべて、成せい犬けんになると落おち着ついてきた。

  Compared to when he was a puppy, he has become calmer as an adult dog.