Here is something to think about!
Has anyone ever considered that the camera lense looks like a huge eye to the dog! Eye contact or a cold stare to a puppy is intimidating! I think some times that the dogs who are more sensitive to the body language of other dogs may not be comfortable with the camera lense staring at them.......what if they think it might challenge them???? Kind of sounds silly but I have wondered this for a long time. Just a thought!