I was on a club ride in a paceline of seven riders. I was in the last position, drafting the riders in front although I was staggered to the left a couple feet. A small dog about 20 lbs runs out of nowhere after the rider directly in front and to the right of me. I broadsided the little dog directly through his rib cage and this collision sent me sprawling across the asphalt at 18mph. I had no real injuries other than some bad road rash on my left elbow and hip. The dog came out unscathed also. This is the only time I have ever hit the pavement. Only thing I could have done was have a higher level of awareness and perhaps I would have seen the little fella as he was darting out in fornt of me.