I always assume the worst when it comes to these things. Hopefully the lab results are done by the time we get to the vet's... but my dog seems comfortable and doesn't act like he's in any pain. We're supposed to leave for my parent's place tomorrow, too, but now not sure what we'll do. If this is really serious, we may have to stay in town. What causes bladder stones? Could it be something he's eaten? Poor Guinness