Gini,

You did exactly what I hope I would have done. Try to
help the person & leashed dogs being walked. I cannot
believe that someone in the city's animal control dept.
would ever say ,in effect, "it was non of your business".
What kind of attitude is that ?
I did try to find out a little more about the Korean breed
dog because I'd never heard of it before. I did find this
site that is explains this particular breed of dog.

http://www.kang.org/Jrp50.html

They seem to be a remarkable, but very primitive breed and
not at all suited for urban life. If we can sent letters or sign
a petition to help in this situation, please let us know.