So I decided to raid an ant hill while I was riding a horse.
I kited them out easily and started the raiding. Only after that I noticed that one of these ants is actually a race car ant (the one that runs very quickly). It was too late and the ant knocked me out. I thought: "Well, it's okay, I just lost some HHP". But ants didn't stop attacking me after I got knocked out, they decided to put my raiding to the complete end. And poof! I'm dead.
I think the same thing happens with foxes.
So be careful out there and don't die to such stupid things!