During my game last night, I was headed north out of Whiterun off to Winterhold, and saw a dragon buzzing around, so I ran to where it was, in case it was attacking someone. Nah, it was just flying lazy circles and swooping down now and then. Watched it for a while, then decided it wasn't going to cause trouble, so I resumed my trip. Well, no sooner had I turned to trudge north than I got this blast of fire from behind. Crafty dragon, waited til I wasn't watching, almost like an aerial sneak attack by something too big to miss.
Had something of the same thing just the other day out on the tundra between Whiterun and Rorikstead. I know there are several dragon lairs up in the mountains between there and Morthal, so if I see a dragon off in the distance circling over the peaks I'll watch and if it doesn't alter its pattern after a couple minutes I just move on.
So I leave Whiterun and head west and get about halfway across the tundra, hear a roar, look up, yep there's a dragon circling a mountain up to the northwest of me. It's just circling, circling, so I shrug and move on, keep looking up every time I hear another roar but it's still just circling. After a while I just stop watching it because I don't plan on going up in the mountains or messing with any lairs as I have other pressing business to attend to. I'm not going to be getting close enough to it to have to worry about anything, right?
Lots of mammoths out on the tundra that day, so I'm keeping an eye out for them and listening for the thud of big heavy feet to make sure I don't accidentally get near enough to one to cause any problems with them or any giants that might also be around. Had just skirted around a couple mammoths who appeared to be unescorted by any giants and thought I'd gotten well out of their path when I passed one of the little rivulets and had a mudcrab pop up. Shot it and was standing there getting ready to loot some chitin for my alchemy when I hear a big THUD behind me and hear the distinct sound of my follower unsheathing his weapon. Oh no, I think, I must've run right into the path of another mammoth and he's not happy and now we're in for a fight.
I turn around and... OH HELLO MR. DRAGON I was not expecting to see you there holy crap where's my potion bag.
I'm not even sure if it was the same dragon I'd seen circling, but there was no dragon up circling the mountains any more after I killed that one. And it's the second time I've had one land right behind me and I hear the thud and turn around and he's just sitting there waiting, and he doesn't attack me from behind. It's like he just enjoys the element of surprise too much and wants to see the look on my face when I finally turn around.