Just a couple of bugs I hadn't heard mentioned anywhere else.

I helped the bounty hunters capture Saadia in the 'In My Time of Need' quest. With Saadia subdued and payment in hand, I decided to trot off to High Hrothgar on my newly bought horse. However, before leaving, I wanted to dismiss Lydia, since I kinda feel bad for companions attempting to follow on foot. She didn't take it too well. Lydia immediately began attacking the paralysed Saadia, while Kematu stood there with a dumb look on his face as though it was nothing. I don't think this was supposed to happen. Should I watch out for this kind of thing elsewhere?

Just north of Riverwood, over the bridge on the path to Bleak Falls Barrow, a hawk can be found circling in the skies above. I hadn't noticed hawks before this and decided to shoot it down; after a couple of wayward shots, I hit my target. Searching the body, I discovered that I could take its feathers for use in alchemy: three sets of them. However, by accident, I only took one set and departed. "No bother", I thought, "I'll just get the others when I come back later". But when I returned, the hawk was nowhere to be found. Nearby, the body of a wolf I had killed during my previous visit was still there, but no hawk. Then I looked up. The hawk was circling above, apparently unfazed by its recent death. I tried to shoot it again. The arrow struck, but the bird continued its flight unconcerned by such things. I shot it again and again and again. It had, perhaps, a dozen arrows stuck in it but kept on soaring with remarkable balance, considering. Should I watch out for other zombie critters? I'm just glad it wasn't a invincible zombie bear.

That's all. Thank you for your time.