I don't have a dog these days, I have a cat who wants no part of things that go clank so he scoots, no problem. Dogs though, well we all know they like to stick close and we like it that way so we let them. Too bad for this pooch, the only option is to keep the dog away from the shop when there may be an arc. Tieing him to a tree 20 ft. from the door where he can still see straight in ain't gonna cut it. Let him in for breaks, lunch, clean up but its for his own good to be away during work.
I know my eyesight isn't what it was before being a welder. When you're working in a boxcar with eight other guys well, you get arced. Nothing you can do about it and over time it has a cumulative effect.
Dan.