Okay, I'll bite:
Pictures have been doctored.
Mule's ears not far enough back for a bloody fight in at least one of the pics.
Dogs standing back and suffering the shame of being protected by a mule instead of joining the fun.
Cougar following pack train all morning?
Just another Dem trying to get credit for effective, bold action.
:)
Your expertise is required.
Yeah, that's what they do.
One of those dogs is sitting on its haunches, no less.
No dog of mine would ever be found sitting around when something that exciting was going on. They'd be running around, barking, or doing something intensely, depending on the kind of dog and training.
Something wrong with that dog (or those pictures).