aww your poor cat

is your cat a male? does the cat eat alot of fish?

i ask that because my male cat (muss) is on a persription diet. he had crystals in his urine going back about three years ago - and a four day stint in the vets, which led to him having an athrirus injection every 3 months. then in match this year - it happend again - peeing blood so they did the same as last time (cathiter with flush) but they took the cathiter out and it happend *again* so they ended up doing an X-ray and found stones (crystals that had become infected and calcified) so he needed an operation to remove them. and he's been fine ever since (well minus the two weeks of AB's he needed - not an easy feat on a cat of his size - 8.9kg)

he's now on the Hills Science K/D diet (Kidney diet) for that. before that he was on the Hills C/D (crystal Diet). but we think that wasn't as affective as it should have been due to my FIL's inabilty to compute that muss = NO FISH AT ALL. as some cats cant digest something in fish (can't think of it off the top of my head) the food can be a little exxy from the vets themself - but i've found a good (and a little cheaper) online pet food place - if you want the link just PM me i hope your cat is ok - it hard seeing them in pain.