Hello Jays and Mittens!

It is nice to meet you, but sorry that it had to happen under these circumstances.  My 13 year old baby Tuxedo had a hemipelvectomy (right rear leg and partial pelvis) about 3 1/2 years ago due to trauma.  He also had a brother at that time (subsequently passed) and a sister now.  Tuxedo has always been kind of a wild child (climbing, jumping, fighting, etc).  He was before the injury and he still is.  But yes, he has lost some ability.  

Like Mittens he would jump on pretty much anything.  To an extent he still does.  However, he has been slowing down this last year.  When he wants he can still jump on the fridge, all furniture without any aid, etc roughly limited to ~6 ft in height and about 4 ft in width.  But usually his jumps are smaller (~2-3 ft).  I try to encourage him to use steps and ramps that I have placed throughout the house to make easier access to his favorite perches.  So while no guarantees, because every cat is different, if Mittens wants she will still b able to jump.  But you might want to look into some helping aids for those favorite places.

As to cat interactions, when Mittens comes home, I suspect that there will be some conflict.  The different smell, the cone, etc.  Dazzle and Tuxedo had many slap fests.  But of course those two played very rough with each other anyways.  Things smoothed out a lot once Tuxedo no longer had to wear his cone.  Other than play, the two got along great, sleeping together, etc.

I got Lilly after Dazzle passed away.  She was young and full of energy.  Always running, talking, jumping, just doing things.  She immediately started picking on him and he would roll throw her around.  This went on for a few days with me watching constantly.   Now Tuxedo and Lilly "fight" at least twice a day.  Lilly loves to run at Tuxedo and knock him over.  Due to the loss of leg and pelvis Tuxedo topples easily and she knows it.  He smacks her around for a little while, then sits on her and it is over.  Both Tuxedo and Lilly have over the top "I am going to get you" type personalities.  So I pretty much ignore their play now.  But I sure worried at first about Tuxedo getting injured.  It is obvious they love each other and he adores the rough rough house play, because he will go sit in the middle of the floor and meow at her to get things started.

Anyway, long story to say, if the cats love and accept each other now, they will again after the amputation.  The missing leg does not seem to affect their interactions.  Though there likely will be an adjustment period. From what I have heard that is typical for when pets come home from the vet.  Some on here said they used cat diffusers.  But most just kept them separated while the one was healing with supervised visits and then allowed gradual reintroduction.

If you have any specific questions for me, it is easier if you private message as I am not online often these days.

Hugs and best wishes,

-Dawna, Tuxedo, Lilly, and Angel Dazzle