A recent experience I had came while walking in a forest with friends about an hour from Seattle. While walking, we heard an animal sound of some kind that cau

A recent experience I had came while walking in a forest with friends about an hour from Seattle. While walking, we heard an animal sound of some kind that cause an immediate "hairs on the back of my neck standing" up reaction along with what felt like an adrenaline rush (time slowing, narrowing of focus, etc). All of this happened immediately, and it took a few moments for my conscious mind to catch up. My friend and I looked at each other and walked briskly away from the sound. It wasn't until we encountered another hiker that we found out a mother bear and cubs had been spotted in that area. This was unlike any other fear of animals, jump scares, or even near-miss types of experiences I've had in the past. It was a very primal and immediate reaction to a sound I've never heard before.