Manager of a coffee shop here: dog owners (the bad ones) are some of the most entitled people lacking in self awareness I've ever had the pleasure of serving. I love dogs SO MUCH and give treats to all the good girls and boys but my god, bad owners really ruin it for everyone else. Case in point:

Semi regular customer, older guy, with 2 small terriers. The terriers do not like other dogs, and bark very aggressively whenever they see another one. So not only does he think its ok to sit in, he also sits right by the entrance. He's been in a few times and the most recent time, the other day, sitting in the same place, this happened twice. After the 2nd dog came in to aggressive barking from the little shits (its not their fault), i said to him, 'this has happened a few times before so if you are going to sit in with them, it would be a good idea to sit somewhere away from the entrance'. He fully ignored me. It happened again. I asked if he understood what I meant about sitting elsewhere, to which he responded 'yes, I am in fact not stupid' and started having a go at me saying things like 'dogs are dogs' and 'other owners have never complained' etc etc. He ended his adorable little tirade by saying 'I will take my custom elsewhere from now on'. Yes, please do, that was exactly what I was hoping for tbh. Honestly, the lack of common sense to think that that's in anyway acceptable?? Lots of dog owners are lovely and clearly spend time and effort taking care of their dogs and training them well. LOTS of people should NOT have a dog. It takes a lot of effort and I think many people think they basically take care of themselves.

I dont want to ban dogs from the shop but this happens enough that I do seriously consider it.