YOU SAID:

The cat ate the dog and found a rooster asleep by the hyena

INTO JAPANESE

猫は犬を食べ、ハイエナのそばで眠っている鶏を見つけた

BACK INTO ENGLISH

The cat ate the dog and found the chicken sleeping next to the hyena

INTO JAPANESE

猫は犬を食べ、鶏がハイエナの隣で寝ているのを見つけた

BACK INTO ENGLISH

The cat ate the dog and found the chicken sleeping next to the hyena