There was always plenty of dogs in rural Poland, but since the traditional farming in last 30 years went into ass for small businesses, leeching off various donations and building Polish versions of McMansions there is barely difference from cities. Of course in the more backwards villages everything might looks as 50 years ago with dogs running freely or even be tied with chain (this is less common now as police slaps fines for this). Now about cities, there's very few outdoor dogs now, as control and registration methods are up. Shit is still everywhere though, i guess you can't have everything.
Also in 90's after entire country went to shit because capitalism, both villages and cities were full of feral dog packs.