YOU SAID:
My 21-year-old feline has diabetes and a green hairdo.
INTO JAPANESE
私の21歳の猫は糖尿病で、緑色の髪型をしています。
BACK INTO ENGLISH
My 21 year old cat is diabetic and has green hair.
INTO JAPANESE
私の21歳の猫は糖尿病で、毛は緑色です。
BACK INTO ENGLISH
My 21 year old cat has diabetes and his fur is green.
INTO JAPANESE
私の21歳の猫は糖尿病を患っており、毛が緑色になっています。
BACK INTO ENGLISH
My 21 year old cat has diabetes and his fur has turned green.
INTO JAPANESE
私の21歳の猫は糖尿病を患っており、毛が緑色に変わってしまいました。
BACK INTO ENGLISH
My 21 year old cat has diabetes and his fur has turned green.
That didn't even make that much sense in English.