Cat intro woes
Almost two weeks ago I adopted Bianca. I had read a number of articles and posts from cat owners, so I thought I was fairly familiar with the task at hand: put new kitty in a safe room with own litter box, toys, food/water bowls; integrate smells; keep cats apart until they are used to each other's scents; etc. After a week, I let my old cat Lay come into the room to see Bianca. There was some growling and hissing (mostly from B) but nothing too aggressive. The cats didn't even get close to one another, with B related to my bed and Lay sniffing around the room. That day I allowed Lay to come into the room when I was there, and the same thing happened: hissing and growling, but no real physical aggression.
A few nights later, I left the door to my room open so that Lay could wander in and out. B sleeps on the bed with me, so I figured that if there was an altercation, I'd be ready to break it up. It was a pretty quiet night - although there was a point when I awoke to an altercation under the bed which quickly ceased.
I let Lay wander in and out of the room for the next few days, since the interactions between the two had been "normal" meaning hissing, growling, and some swatting, but no bites/no blood. A few times I heard altercations, ending in B in the defensive position and Lay on the offensive, but again, no bites/no blood. I've been careful to keep nails clipped, too.
I thought perhaps this was all normal behavior until a few nights ago. B wet the bed. My bed. While I was out of the room. Now, I know that urination is a sign of something being wrong - first thing to do would be to call the vet, but I thought I'd give it a day. Lay had used her litter box so I scratched it up to a territorial thing. In fact, Lay frequently uses B's box when she has the opportunity.
Yesterday, I came into the room to another altercation. Lay was on the bed, B was on her back scared. Then, she just started peeing (while on her back...it wasn't pretty). I thought, Lay must have scared the pee out of her...though my concern was growing. Then, before I climbed into bed I realized that B peed the bed again. After this last incident, I decided to start again at square one with the intros and will call the vet on Monday.
Today, I've kept Lay out of the room and B in. She's clearly afraid of Lay. Every time she jumps down from the bed (her safe zone in the safe room), she looks under the bed and hisses. She won't stay on the floor for more than a couple seconds at a time...impeding her eating, drinking, and...other...business. I've spent a lot of time with her in the room, trying to show her that the big bad other kitty is not around hiding in the safe room. B is more apt to jump down on the ground, after today, but she's only peed once and no poop. In fact, I have a feeling she's been constipated or willingly holding it in out of fear of Lay. She hasn't pooped in a few days. I actually think this may be a trend because her last poop was gargantuan...after two days of not going.
Now, I've integrated Lay with other kitties before. She's not a biter, just a swatter at most, and then chills out. However, Lay has always been the 'newcomer' in the household, not the alpha cat. I suppose this power dynamic is a factor in kitty relations as well...
My next step is the vet to see if there are any medical reasons for this behavior. However, I would be very grateful to hear if any fellow kitty moms or dads out there have experienced this with their own kitty integration. I'm terrified that it's not going to work out with the two. I'm horrified that I may have scared B to the point of not being comfortable doing the things that all animals must do! If anyone has any words of wisdom for me, I would sincerely appreciate it.