YOU SAID:
destroy my cat but not my dog
INTO JAPANESE
私の猫がない私の犬を破壊します。
BACK INTO ENGLISH
Destroy my cat is not my dog.
INTO JAPANESE
破壊する私の猫は私の犬ではないです。
BACK INTO ENGLISH
Destroy my cat is not my dog.
That didn't even make that much sense in English.