"The Viennese are real dog lovers," said the capital's environment councilor Ulli Sima who initiated the license project.
"But they believe strict measures are necessary so that peaceful cohabitation between man and dog is possible in this city."
Those happy owners who pass their "license" — or Hundefuehrerschein — will be exempt from the annual dog tax of 43.60 euros ($53) and will receive a few goodies for their pets, from vouchers for a new leash to bags for their pet's droppings.
The initiative was triggered by a survey of 500 Viennese residents in September 2004 in which a surprising 85 percent backed the idea of instituting a "driver's license for dogs."
Vienna officially counts about 47,000 canines — meaning those subject to a city dog tax — but estimates say there could be up to 150,000 hounds for a population of 1.7 million humans.
"This is not about pure obedience, but rather about social tolerance of the dog-owner team in the city," said Sima's deputy Karl Woegerer.
This Viennese initiative "is unique in this form, although licenses exist in several German states," he said.