If the cougar hadn't been harassed and killed, I might see the humour in this.

As it was, Gibb chased the cougar away, his dog was hurt but he left it to go harass the cougar some more.  

A cougar that by the man's own admission was just sort of "pawing" at him. A cougar that didn't even scratch him while his own dog bit him and then ran away.

Dude, it wasn't personal it was a cougar looking for a meal. 

And now the cougar is dead and who knows if it was out hunting for its kittens?