YOU SAID:

My monkey pet is alone at home eating his own tail

INTO JAPANESE

私のペットの猿は家で一人で自分の尻尾を食べています

BACK INTO ENGLISH

My pet monkey is eating his own tail alone at home

INTO JAPANESE

私のペットの猿が家で一人で自分の尻尾を食べています

BACK INTO ENGLISH

My pet monkey is eating his own tail alone at home