YOU SAID:
A guinea pig ate my tooth
INTO JAPANESE
モルモットを食べた私の歯
BACK INTO ENGLISH
I ate a Guinea pig's teeth
INTO JAPANESE
モルモットの歯を食べました
BACK INTO ENGLISH
I had a Guinea pig's teeth
INTO JAPANESE
モルモットの歯を持っていた
BACK INTO ENGLISH
Had a Guinea pig's teeth
INTO JAPANESE
モルモットの歯を持っていた
BACK INTO ENGLISH
Had a Guinea pig's teeth
That didn't even make that much sense in English.