25 fatal attacks since June of 1890
, that is a very low # IMO. Bear attacks are far more frequent than mountain lion attacks, https://en.wikipedia.org/wiki/List_of_fatal_bear_attacks_in_North_America
. How often do people go hiking or camping and NOT get attacked by a mountain lion? We don't usually hear about mountain lion sightings unless somebody or a pet has been attacked, not to mention mountain lions are frequently aware of your presence even if your unaware of theirs. I still think it's possible DeOrr was attacked by a mountain lion, I don't however believe they are as predatory on humans as many others do. They prefer deer and other small mammals...and really try to avoid people. If DeOrr was attacked by a mountain lion, I think it happened after he wandered away from the campsite; I don't think the Cougar would have come up to camp and snatched him IMOO.
Off topic: I do live in mountain lion country and have been fortunate enough to see a mountain lion in my front yard from inside my house AND catch it on video! We have found half eaten deer carcasses 'buried' around our property (we border BLM) and we continue to hike enjoy the outdoors....just safely ;-)
In addition, dont hike in wild areas alone; never run past or from a cougar, as this may trigger their instinct to chase; never bend down or crouch downthis will make humans look like four-legged prey to some mountain lions and also makes the neck and back of the head vulnerable; during an encounter with a mountain lion, make yourself look larger by opening your jacket, raising your arms and throwing branches and stones without turning away; and try to remain standing to protect your head and neck, if attacked, but fight back with whatever is at hand.