YOU SAID:

My ten dogs died of a heart failure when my other dogs where twelve

INTO JAPANESE

私の10匹の犬は、他の犬が12匹

BACK INTO ENGLISH

My 10 dogs are 12 other dogs

INTO JAPANESE

私の10匹の犬は他の12匹の犬です

BACK INTO ENGLISH

My 10 dogs are the other 12 dogs

INTO JAPANESE

私の10匹の犬は他の12匹の犬です

BACK INTO ENGLISH

My 10 dogs are the other 12 dogs