A follow-up article from today's Tagi:
http://www.tagesanzeiger.ch/schweiz/...story/19137007
"(Zürich dogs don't bite any differently than Geneva dogs")
Basically, the Nationalrat and Standerat are at odds as to the way forward with federal legislation. The Nationalrat wants to leave the cantons more discretion (which is the case today), whereas the Standerat wants one unified law throughout Switzerland.
Bundespresident Leuthard is in favor of a Swiss-wide law.
Worryingly, in this 'one law' solution, the Standerat is pushing for muzzling restrictions and a ownership permit requirements on 'potentially dangerous' dogs - whether this refers to specific breeds, or the more general size limit (usually batted about as 15kg/40cm), the article does not say.
It looks like déjà vu all over again...