Wildbore bug

So, I was playing SW like normal. It was the end of Dry season, and I noticed two wildbores in water, while I was on land. I played as Webber, and I was like "just a bug, nothing special, maybe they'll come back to their homes later." 
That was at night, and later, Mild season started.
I decided to go back to my base, and when I was halfway to "home", I've seen MORE, LOTS OF WILDBORES JUST RUNNING ON ME.
I didn't die, however, that is really surprising.
(also there's crabbit on water too... what the hell is wrong with them?)