A monitoring system for determining numbers of captured or killed living creatures includes at least one living-creature capture device having functions of luring, or capturing or killing living creatures at least one camera for capturing images of the living-creature capture devices, the images including photos an input interface unit connected to the camera for receiving the images from the camera an operation unit performing logic operations of the system the operation unit includes a timer for recording times for capturing images a comparison unit for determining a number of living creatures of the image and the comparison unit containing a sample database and a memory unit built in a memory for storing related data of the system. The system can be realized by a specific image processing unit which is combined with a cloud structure or by a handset or by a computer or by a cloud structure.