An accidental ingestion detecting apparatus according to the present disclosure includes: a swallowing sensing unit which senses swallowing by an animal； a swallowing detecting unit which detects swallowing based on sensing data outputted by the swallowing sensing unit and which outputs swallowing information that is information related to the swallowing； a feeding information inputting unit which accepts input of information related to feeding of the animal and which outputs the information as feeding information； and an accidental ingestion determining unit which determines accidental ingestion by the animal, wherein the accidental ingestion determining unit determines accidental ingestion by the animal based on date/time information included in the swallowing information and date/time information included in the feeding information.
