Abstract: Technologies are described for a domestic animal identification service. In one example, domestic animal profiles can be dynamically displayed in a profile display region of a graphical user interface. Domestic animal profiles that correspond to one or more phenotypes can be obtained from a profile data store, and the domestic animal profiles can be displayed in a profile display region of the graphical user interface to allow user-identification of a profile that may be associated with the domestic animal. The profile display region of the graphical user interface can be dynamically updated to include domestic animal profiles that correspond to identification parameters input to the graphic user interface.