YOU SAID:
I need to eat, or i eat dog
INTO JAPANESE
私は食べる必要があります、または私は犬を食べます
BACK INTO ENGLISH
I have to eat, or i eat a dog
INTO JAPANESE
私は食べなければならない、または私は犬を食べる
BACK INTO ENGLISH
I have to eat, or i eat a dog
That didn't even make that much sense in English.