Thank you so much! Good to know...i do not want to stress his kidneys anymore. His bloodwork, pre-op came back as good, which is such good news. As he does not have any history of urinary tract or kidney infections, i am thinking, this may be a one time deal...at least that is my hope. I am still unsure of why this happened. No stones found. Perhaps a combination of dehydration, infection, bad grooming habits...Gus was a found on street at @3 weeks old, no mama to teach him grooming, so he tends to be less fastidious than most cats. I understand even the vet community is often at a loss for why this happens. Gus is in surgery right now. Gulp. Really scared for him, but trying to stay busy until that (please God) good news phone call comes. Thanks again!