YOU SAID:

the dog needs to go for a walk to get his energy out

INTO JAPANESE

犬はエネルギーを発散するために散歩に行く必要がある

BACK INTO ENGLISH

Dogs need to go for walks to burn off energy.

INTO JAPANESE

犬はエネルギーを消費するために散歩に行く必要があります。

BACK INTO ENGLISH

Dogs need to go for walks to burn off energy.