I lived in Berlin almost 9 years while I was active duty.
For a city of its size, it has an enormous amount of land allocated to parks and greenery. The "Gruney pigs", as the U.S. military tended to call these Wildschweine (sort of a bastardization of the rather large forested area in which the Army did much of its in-Berlin tactical training, which is called the "Grunewald" and the critters themselves), were problematic in the Grunewald and there are a lot of stories about the interaction between the GIs and the pigs.
Very early one weekend morning, while dawn was just breaking, I was out running a 29-km course in the Grunewald, happy as a clam, minding my own business, when just ahead of me one of these Wildschwein sows emerged out on my running trail with a small little horde of piglets in tow.
Holy shit. This is NOT a good thing. Sows are notoriously bitchy, angry, pissed-off critters when anything even comes near their offspring.
But as it developed, she didn't see me as she turned right onto the trail ahead of me. Their eyesight isn't all that good, though they have a great sense of smell (apparently this was early in my run when I wasn't all that funky yet), but she was oblivious to my presence.
All the same, I stopped dead in my tracks and watched from about 10 ft. away as she continued along the trail.
Eventually, she peeled off back into the deepest part of the woods and I had the trail again to myself.
After I changed my shorts, I continued my run.