pit bull or mountain lion?

Like... a mountain lion... came in the dog pen and attacked the guy... and the dogs said--what?--"Shit, it's a mountain lion. Look busy."

There are things that are POSSIBLE and things that are LIKELY. Guy dies with severe bite wounds in an enclosure with multiple pit bulls and it is LIKELY that he was killed by pit bulls.

I have a rather large pit. I'm going to go out on a limb and say that the size of the canines should be MUCH different between a dog and a large cat. I don't get why it would be so hard for them to figure out...