I’m not surprised at this at all.
Dog owners these days seem to think they are entitled to take them everywhere.
There have been several discussions on here about how difficult it is to find a cafe or even a restaurant which is dog free for those of us who would prefer that.
We were in a large out of town John Lewis recently, trying to listen to an assistant in the electrical department, and were struggling to do so as there was a blasted dog near us barking away with the owner seemingly oblivious as usual.
In the case here my guess is the chap wants to see what his dog ‘thinks’ of the potential girlfriend.