I have two cats and Bitsy. The two cats came first and I brought Bitsy home when she was 9 weeks old and both the cats were a little over a year old.
I really do think it depends on the personality of the cats. Both my cats still have their claws. I find that in my experience, all the declawed cats I've seen have been more anxious and more willing to go into attack mode, either using their teeth, or griping and raking with the undeclawed back legs. I've been hurt by more declawed cats than cats with claws intact.
Bitsy is smaller than both the kitties and she loves to chase them around. Most of the time they put up with it or jump onto higher ground. KoKo is less tolerant than GiGi and will occasionally turn around and swat Bitsy (but never with her claws out). Both cats have growled at her, but I've never heard them hiss or spit at her. At night, we all sleep together peacefully on the same bed.
It is a possibility that your cat can harm your new puppy, so I would definitely not let them be alone together unsupervised, at least until I was sure they get along. To get your cat to accept the puppy quicker, I would suggest rubbing a towel on the cat, then rub the puppy so the puppy will have the cat's scent. Cats are different than dogs where the cat marks their scent on the people they like and deem "safe" (that's why cats rub against you) whereas dogs remember your scent.
__________________ KoKo  GiGi Bitsy  |