Larry lives in Sydney (I removed the suburb because it too closely identified the building – my bad!).
The dog owner would only be in breach if there was a by-law covering the canine urination (rather than there not being a by-law or clause allowing it). And it may well be that their pet by-laws cover the animal’s behaviour.
That said, the balcony is common property so the strata committee should be able to find something on the books for which he could be pinged.