To notify a pet owner of the witness information of a missing pet so as to be easily understood.

A witness information registration means 11 receives the witness information including a witness place where the pet is witnessed from witness information providing terminals 20-1 to 20-n and registers it, and a map selection means 12 selects a map corresponding to the witness place. A providing information preparation means 13 prepares providing information in which a mark specifying the witness place is executed on the map, and a notifying means 14 notifies the providing information.