Something this ridiculously stupid and careless could only come out of one country: Russia (though China would be a close second). Apparently Russian truck drivers, regardless of whether their cargo is living or not, are consistently impatient while behind the wheel, and evidently end up doing stupid things. Typical road rules, as it turns out, hold little to no meaning there. This driver somehow managed to lose control and overturned while going at a relatively high speed.
The cows he was transporting spilled out all over the road. Fortunately they all appeared to be okay, but something like this doesn't happen often. This is why we have the DFA, for people such as this.