YOU SAID:

I am John Cena and i have a cat.

INTO JAPANESE

私はジョン・シナで、猫を飼っています。

BACK INTO ENGLISH

My name is John Cena and I have a cat.

INTO JAPANESE

私はジョン・シナといい、猫を飼っています。

BACK INTO ENGLISH

My name is John Cena and I have a cat.