Yep..Felt that one too, I found that my Ikea bookshelf really isnt as solid as it seems, going to add some brackets to it and screw those to the wall..Dog just laid there as usual till the house shook then ran outside, I thought they had a 6`th sence about those things.
Something the quake lady was saying and I really had forgotten about is how it has been quiet for 15-20 years, Maybe an active time is upon us.