YOU SAID:
Hello. My kitty is 4 years old
INTO JAPANESE
こんにちは。私の子猫は4歳です
BACK INTO ENGLISH
Hello. My kitten is 4 years old
INTO JAPANESE
こんにちは。私の子猫は4歳です
BACK INTO ENGLISH
Hello. My kitten is 4 years old
That didn't even make that much sense in English.