Awwww Mookster. Hang in there, baby!

I don't suppose you can put one of them out in the yard for a while or something?

They are cats silly. Not dogs. They never go outside.

Catnip. Tons of catnip. Not kidding, it always works for me. Also, cat calming spray.

It's an instinctual thing...cats don't want weak or injured cats around. It doesn't have much to do with the smell. Itsy doesn't want a bigger predator to come after them because it's attracted to Mookie. I would keep them separated until Mookie gets better. Last time I had a cat come home from the vet all injured, the two were in each other's faces at first, but once Bucko started to heal, they went back to ignoring each other again.

Well thank goodness for urine!

Give them some time...I think Itsy will calm down. If you have to, separate them for a while in different rooms...can you do that?

So glad Mookie shouldn't need surgery!

Hooray for urine!

And yes, the social aspect of things will settle down. I suspect if Mookie is peeing freely (ha!), that means he's feeling better and perhaps his urine even smells differently than before (minus some proteins from the obstruction, etc.) Cats have very strong senses of smell, so anything from a vet visit to a new diet making its way through the digestive tract can really effect how they percieve each other.

Keep them separated for the weekend if you can. We've run into this problem a few times after vet visits, and it's always been a good week before things calmed down. The Feliway spray (I think Petco sells it) does help, but it can be expensive in the long run.

Good luck, and again - so glad to hear about Mookie's success!

Wow - you've got some good cat advisers here! I could use some of this help myself with my "inappropriately peeing" cats. yes, plural.
I'd agree with the catnip. Get a couple for each of them and just keep them stoned. :)
Also maybe special playing time with just Itsy, and then with just Mookie. My cats get jealous if they think we're spending too much time with another one.

SO glad to hear Mookster is doing better. We're all pulling for him.

I know nothing about cats except that they love me despite my having horrible allergies to them and that the feeling would be mutual if I could pet and snuggle them without my face puffing up and not being able to breathe. But I am sending healthy vibes to Mookie and happy vibes to Itsy and good vibes to you.

Geez. Between You, Tracy, and your animal children - I'm a regular vibe machine. Ahem. That sounds weird.

Oh yes, I know what it's like to be thrilled about urine. One time the vet called when I wasn't home with results of the urinalysis, and Rob left me a note: "The vet says Bridge's urine is perfect!" I was so happy, I put the note on the fridge. Where it stays today, 2 years later. Is that weird? Like I care.

Hi, I'm a lurker and just thought I would pop in to share my advice. I agree with what other folks have said, keeping them separated for the weekend sounds like a good idea. Is there another room you can put Mookie in while you check on Itsy (just to avoid him trying to attack her)? You may want to try some of the things you do when you bring a new cat home--try petting Mookie a lot and then going and petting Itsy a lot, and back and forth (to intermingle their scents), try feeding them on either side of the same door, etc. But after a while (hopefully just the weekend), Mookie should lose smell of the vet's office. Good luck, I hope that Mookie and the fighting get better!

We always bathed the cats when one was away. They then smelled the same and were buddies again.

Hang in there! Yay pee!

Hi torrie,

I work in a vet office and this sort of behaviour is extremely common. The absolute best idea is to keep them separate until they both calm down. Itsy will be fine in the second bathroom for a few days, you can switch them out for a few hours a day. Put Mookie in the other bathroom and let Itsy out to snuggle and roam around and then put her back in the second bathroom. There are other options you can try which is, as someone mentioned, a cat calming spray. That can work wonders but be warned - it is expensive! You can buy it at your vet. As well, you can try taking Itsy out of the house in her carrier for a while and make sure that Mookie sees you doing it. It doesn't have to be for a long period of time, an hour or so would be fine just make sure that Mookie sees you leaving with Itsy. I had friends who's cats started fighting viciously for no reason; it lasted weeks. Finally, in desperation they took the one cat out of the house for an hour or so, when they brought him back, Chloe was much calmer with him and things started to go back to normal. And as hard as this is, try to stay calm and neutral about it. Cats, like dogs, can pick up on their humans fears and anxieties and that increases theirs. If you can act nonchalant about it when Mookie hisses and growls at Itsy through the door, maybe say something like "Oh Mookie, you silly little boy." in that high pitched voice all cats seem to love and give him some pets and snuggles that will help the situation as well. Try not to stress about it too much, I know it's hard but it will get better. Cats are such weenies sometimes! :) And it really won't hurt Itsy to be locked in the bathroom all weekend. Good luck and let us know how it goes!

how's everyone getting along? any better?

i second rach's question... been wondering how mookie is doing, and if they're getting along yet.

Just checking back in to see how its going. I think I just paid $8 for a good sized bottle of herbal cat spray at a local feed store, didn't seem like an expensive option to me. Also, I was wondering what anyone has to say about the purina one urinary tract formula cat food.

I may be weighing in late on this issue, but I had a similar problem a couple of years ago after one of my cats ran away. After we found him, the remaining cat treated the runaway like a total stranger, hissing and spitting to beat the band. The vet suggested tuna juice (water from the tuna packed in water) on the head of the runaway, reapplied as necessary.

It took a couple of days worth of really smelly apartment and small runaway cat, but it totally did the trick.