YOU SAID:
My cat had a toxic releationship with its neighbour
INTO JAPANESE
私の猫は隣国と毒性の関係を持っていた
BACK INTO ENGLISH
My cat had a relationship between neighbours and toxicity
INTO JAPANESE
私の猫は隣人と毒性との関係を持っていた
BACK INTO ENGLISH
My cat had a relationship between neighbours and toxicity
Well done, yes, well done!