The photo taken in Horgen on Monday morning is the fourth confirmed sighting of a wolf in Zurich since 2014, Zurich daily NZZ reported.
Prior to that date, no wolves had been seen in the canton for over a hundred years.
Experts said the photo of the wolf in Horgen did not provide any information about its origin or age. The current location of the wolf remain unknown but cantonal fishing and hunting authorities are now attempting to establish its whereabouts.
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Livestock farmers in the area will also be notified of the wolf's presence.
Given wolves can travel large distances, it is possible that the wolf is no longer in the canton of Zurich, Swiss daily Blick reported.
The animal is not a danger to humans as wolves are shy by nature and avoid contact with people, the paper reported.
But people who do spot the wolf should keep their distance and dogs should be kept on a leash.
Zurich does not have measures to promote the resettling of wild wolves but accepts them as part of the natural fauna.
Recently a brown bear made headlines when it walked across a ski piste in the Engelberg Titlis ski area in central Switzerland.