On my way to fight the first dragon I saw a Master Vampire dead near the gates of Whiterun. Next everyone was fighting Death Hounds that were killing a horse as we left Whiterun. Then later after all the chaos I started to forge things, and I found a Shellbug Helmet? I cannot make it of course yet sine I need shellbug chitin. Since I never saw these before in Skyrim I looked up the wiki and found out it's all Dawngaurd DLC stuff. But the thing is, I do NOT own Dawnguard or any DLC besides Hearthfire. Is this normal stuff or something else? (Then again what's not strange about a Bethesda game knowing they release gltchy, unstable games all the time).