I'm sorry I'm afraid I don't have any names or contacts but I am happy to support.
Also just as an aside, I have noticed over the past couple of years, the number of dogs allowed to wander by themselves seems to have grown. This used to be the case here in the UK too, many years ago but rarely seen now. (In my area anyway).
Again this is evidence of the owner not caring or taking responsibility for their animal. A dog, no matter how well trained, will not clear up after themselves!
It is a cultural barrier. The attitude is not the same as ours and may well take some doing to change. From where the locals stand, they may well argue that all is ok please leave us alone. How many dogs are welcome in UK restaurants?
It may well be that the locals are quite happy with how things are and resent us British coming along to tell them what they should be doing.
Just throwing this in the air - doesn't mean I am changing sides but worth investigating the objections to be able to overcome them.
Still think it is a case of education and naming and shaming - just not sure how it can be done.