Even though Deathclaws aren't that hard to kill (as long as you snipe them from a distance with a good DAM weapon and some AP ammo, that is

), they scare me more than anything else in the Wasteland. Let me tell you a story from a couple of nights ago...
I was finishing up the quest "Volare!" and I was on my way to Lake Mead from the north. On the way, I passed through a train yard of some kind where I had previously I had come across a whole bunch of Deathclaws. I wasn't strong enough to reliably kill them at that time (my attempt to get through resulted in a showdown with a fully-grown Deathclaw who took out ED-E and Veronica, and I only had one tiny sliver of HP left when I finally killed it), so I retreated and came back last night... no Deathclaws in sight. As I was progressing, I found that Veronica had completely vanished, so I went back to see if she had gotten stuck somewhere... to find that I was surrounded by Deathclaws. Thankfully none of them noticed me and I sniped them safely, but that [censored] was scary. (Especially since it happened at night.)