I have seven cats and just recently took in a bunny who is in her cage most of the time, but when I let her out at night the cats don't bother her. They're VERY curious about her, and she gets sniffed a lot, butI have a couple that I think will end up being her pals,and out of seven cats I've never felt that they were going to hurt Allie. When I'm home I'll leave the cats and Allie by themselves while I make dinner, clean, etc., and all is well.She can take care of herself.One nightAllie got tired of being sniffed and did a 180 to face the offending cat--you haven't seen anything until you've seen a 16 pound cat run scared from a 4 pound bunny!
Every cat and every rabbit is different, so I can't say for sure, but from what I've read and experienced more often than not bunnies and cats are okay with each other.
Now as for my cats all getting along, that's another story....:?