In Volkspark Rehberge (U6) you can see some wild boars. You can smell them from further away as well.

There are other animals in this park, all of them are caged so they do not eat the unlikely tourists/get eaten by the unlikely tourists.

It feels good to enter the U-Bahn only to find (at last!) advertising that actually gives you good advice…

By the way… have you ever seen all those posters in the U-Bahn asking for people who is willing to try medicaments for pharmaceutical companies? How legal is that? How much do they pay? Where do they bury the corpses?