An imaging device for animals of the present invention comprises: a darkroom box having an opening part through which a portion of a subject to be examined protrudes to the outside or an external stimulator can be inputted or outputted in order to apply stimulation； a subject-to-be-examined supporter for mounting the subject to be examined thereon so as to facilitate the protruding of the portion of the subject to be examined to the outside or the application of an external stimulus； an image capturing device for photographing the subject to be examined before, after or during the application of the external stimulus while applying the external stimulus_to the portion of the subject to be examined mounted on the subject-to-be-examined supporter； and an image processing system for processing the image captured through the image capturing device.
