The Weirdest Thing Happened to me on Fallout 4

So I was out exploring in my X-01 power armor when I found Sunshine Tidings Co-op. It was part of one of my quests so I went ahead and cleared it out. I planted some crops and set up a water pump after clearing the place of two radroaches and 3 to 4 ghouls. I could only build one turret there and so I decided to go around and scrap items for parts. I found a building I didn't enter and figured there would only be a ghoul or a radroach inside seeing as it was locked. I unlock it and inside was a bucking deathclaw! There was no way in and out of the house that was big enough for that to even get in there. I managed to kill with ease and upon death it became a bloody mess with it combusting into pieces. This goes to show that Fallout 4 is full of surprises.