Argh. Still annoyed even typing this
Visited a store of a well known aspirational brand today.
They let dogs in and have water bowls outside, encouraging dogs to 'take a sip' and then goes on to say all dogs on leads or dogs in arms are welcome inside
I had just spent good money on something and stopped to have a look at something on the display table near the exit.
The owner seemed to have been having a browse next to me and her dog proceeded to go right next to me! My paper bag from the shop got wet 
The store assistant noticed, giggled and went to get some stuff to clean up. No mention of my bag or compensating me when I said 'Oh dear, it's on my bag now'. She just said 'ha, what are they like!' Then ignored me and started chatting to the owner who whilst the cleaning stuff was fetched, kept apologising to me over and over
And in truth, it isn't the dog owners fault really. The ultimate blame is with the shop for allowing dogs of any kind beyond guide dogs into the place.
I asked for a clean bag. Discovered my item also got wet. Shop assistant said 'oh, hopefully it'll just wash out!' And that was that
I was so embarrassed and upset that I left
AIBU to think dogs shouldn't be in shops? I can sort of see the appeal to have a tasteful sausage dog allowed in but not medium+ size breeds!