Maybe a combination of feeling bad from the shots & hearing those odd sounds from the iPad? I have 18 speakers on my TV so there is a lot of different, very high & mid-range sounds & odd sounds that come out quite distinctly from time-to-time. Tibbe totally used to freak out when he would hear a "new" sound come out - something he'd not dealt with before. He used to just quietly slip off the couch & go to the bedroom & I would find him back there shivering. With some behavior modification training, he learned now that those sounds are good things.
My last dog could care less about sounds & was affected by no noises but Tibbe is very, very sensitive to new or different sounds, far less-so now than when I got him. And a lot of time dogs associate something they dislike to the place or circumstance where they heard it or the person they were with when they heard it - or all those. Some dogs will store that fear away & revisit it while others are not fearful when it recurs. Hope yours is better now & it was all a one-time deal.
__________________  Jeanie and Tibbe One must do the best one can. You may get some marks for a very imperfect answer: you will certainly get none for leaving the question alone. C. S. Lewis |