YOU SAID:

there's cat hair on my pizza

INTO JAPANESE

私のピザに猫の毛がある

BACK INTO ENGLISH

There's cat hair on my pizza.

INTO JAPANESE

私のピザには猫の毛があります。

BACK INTO ENGLISH

My pizza has cat hair.

INTO JAPANESE

私のピザは猫の毛を持っています。

BACK INTO ENGLISH

My pizza has cat hair.