See...

She does stop! She was very interested in the camera flash though. Here's the wiki page for the Ibizan hound (thanks Christine). I don't think she's purebred though. Her neck and head aren't quite that long and the black makes me think of just a tough of shepherd. Apparently the breed in general is an escape artist and will jump fences, I haven't seen any sign of that, and neither did the home where she was staying. Other than wanting to run around and look at everything every.time she comes in from outside, she has good house manners and is ok with just laying down and chilling out.