NOBODY says they are casual about it, just not freaked out about it to the point of feeling the need to carry extra weight around, when you have more than enough firepower in yer hands to kill anything in the woods!
I am always aware of my surroundings, even here in town as there is more than one type of predator out there.
Yes bears and cats could attack but the circumstances have to be right, most likely a bear attack would be from a sow with cubs and the cat attack maybe from a sickly old cat or disoriented youngster that can't catch a deer!