It is very dangerous unless you have experienced survival skills. People who do day hikes but are not experienced or prepared with the correct clothing, equipment, and tools can and do get lost only a few miles off the road or trail head and get themselves into serious trouble. Its not the animals that are the most dangerous, its being in unfamiliar terrain and not wearing proper attire for unexpected inclimate weather. There are many stories of hikers in WA getting lost to never be found. Wandering off into the wild with just a bottle of water and phone is irresponsible.