YOU SAID:

this cat can't believe his luck

INTO JAPANESE

この猫は、自分の運を信じることができません。

BACK INTO ENGLISH

This cat cannot believe their luck.

INTO JAPANESE

この猫は運が信じられない。

BACK INTO ENGLISH

This cat is incredibly lucky.

INTO JAPANESE

この猫は、信じられないほど幸運です。

BACK INTO ENGLISH

This cat is so incredibly lucky.

INTO JAPANESE

この猫は、信じられないほど幸運です。

BACK INTO ENGLISH

This cat is so incredibly lucky.