Hope she gets better.
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I'm so sorry your going through this with Karma, you must be really worried. I'm not sure what could cause this either, but was going to suggest stones, so agree with above members that it could be either bladder or kidney stones. I don't have any experience withnstones, but know they are quite painful, and can cause bleeding in urine. I hope the specialist figures out the cause, and she gets the proper medication/ treatment. Sending hugs, love and prayers your way. Hope Karma feels better soon, I'll look for your updates to see what the vet said and what he found. Take care Hun, she's in good hands with the vet, and you've kept on top of this, so hopefully she'll get better soon.
LEARN A LESSON FROM YOUR DOG, NO MATTER WHAT LIFE BRINGS YOU, KICK SOME GRASS OVER THAT AND MOVE ON.