Surely the point is that if the licenses were policed properly, any unlicensed unchipped dogs could be easily identified and removed from their owners and put to sleep.
Ah but that's the problem, the licence and chip laws being policed properly.
Currently, we have a law that dictates that dogs, and cats, must be microchipped but you still keep seeing on sites like face book that a stray dog or cat has been picked up by a member of the public who found it wandering alone but it can't be identified as it has no chip.
The fact is no one is policing the microchip law and likewise no one will police a licensing law. There isn't the money available with which to provide people who will go around inspecting dog licences and neither is there the will.
I'm one of the pps who said that dog licences are pointless because the people who breed and buy these dangerous dogs will not bother to buy a licence.
All the time there is no one policing such laws there is absolutely no point in bringing in such laws.
The microchipping law has been absolutely pointless for that reason, people are still not microchipping their pets. I can't imagine a licencing law would be any different or more effective.