Yeah - I've bought albums with clawed covers before (always at a discount, of course). It only annoys me when it the little blighters have scratched off the printing so I can't tell what they are without pulling them.
Frankly, kids and animals have no place in a listening room, but I suppose if you have a modern open floor plan house you are stuck unless you can lock them away when the gear is being used.
I had one couple visit with their young children and the kids headed for the stereo gear. I asked the father for the name of his insurance agent and when I said that if they let the kids at my gear and one of the damaged my cartridge, I need to know who would be paying as it wouldn't be me. He asked how much it was worth and I told him (several thousand) and he immediately rounded up the children and left pretty quickly after that. Amazing how parents today seem to think that whatever their brats do is somehow blameless and no one is accountable.