A service server is started. The service server includes a data storage for maintaining companion animal standard growth data and companion animal emotion template library; a communication unit for performing communication with the image photographing apparatus and the user terminal; and a controller, wherein the controller comprises: receiving an image of a companion animal from the image photographing device; acquiring companion animal 3D data from the companion animal image; deriving a growth index by comparing the companion animal 3D data with the companion animal standard growth data in the data storage; obtaining emotion information by comparing the companion animal facial landmarks obtained from the companion animal image with the companion animal emotion template library; and transmitting the companion animal 3D data, the growth index, the emotion information, IOT equipment information corresponding to the emotion information, and the location information of the companion animal to the user terminal.
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