I have two cats, Bonnie and Terence. Terence is a fairly chill cat, but Bonnie is pretty sassy and we were nervous that she would be very fearful and possibly aggressive towards our baby, since she had quite the hissing fit when my friend came over with her baby while I was pregnant. Also, I was worried about possible smothering, since Bonnie would often snuggle so close to me that she was right on top of my face. She could have suffocated me if I weren’t able to move her! lol.
Anyways, what I did while I was pregnant a few times was play some baby crying sounds around her and make sure she got a chance to sniff and rub all the baby stuff.
We also got this really great friendly cat-pheromone spray called Thunder Spray that also has chamomile in it that has been AMAZING for helping calm her down. We used it the day that Dear Daughter came home. Sprayed it on the car seat, the bassinet that we put her in as well as the couch that I frequently nurse her on.
She was definitely quite on edge the first few days, and to a lesser extent for 2-3 weeks, but slowly Bonnie has been getting more comfortable and even coming up and sniffing the baby and not getting tense. We make sure to give her a lot of positive reinforcement, petting her and saying “good kitty, Bonnie” whenever she’s around the baby and being fairly chill.
The thing that at first was getting the kitties really tense and apprehensive was the loud crying of course, so the first week or so, we gave them treats whenever she cried so that they had some sort of positive association.
I think the most important thing is helping the kitties create positive associations with the baby, so defintiely avoid yelling or shooing them away from the baby. Even if they are getting too close for comfort, try to pick them up and remove them calmly.
For the record, my other cat Terence had very little difficulty adjusting. The crying would startle him during the first week, and after that he was totally mellow, and now will sleep next to her while I’m nursing and he is back sleeping at the foot of our bed ,
Good luck to you!