YOU SAID:

My dog is blue but it can't fly.

INTO JAPANESE

私の犬は青いが、それは飛ぶことができません。

BACK INTO ENGLISH

My dog is blue, but it cannot fly.

INTO JAPANESE

私の犬は青い、しかしそれは飛ぶことができません。

BACK INTO ENGLISH

My dog is blue, but it cannot fly.