I completely agree with Eric - you're getting these links because you likely rank well in an image search.
While it is completely up to you to decide to keep those links or disavow them (I have links from some of the same domains and have kept them without adverse effects), if you choose to disavow, I would recommend disavowing the whole domain. These types of sites will only continue to add images - adding links to your sites - and disavowing a select few won't be as effective as disavowing the entire domain.
