Hi!

Personally, I would keep them separated unless they were both babies when you got them. A bunny is prey and a cat is the predator. I know some cats and bunnies are best buds, but it depends on their personality. And you wouldn’t want your bun to get ahold of the cats food as that can be very toxic.

there’s a BUNNY INFO section here and house rabbit society website has great information for bun owners

I would keep the separate for a bit and observe how both continue the interactions. Wick and I did a short stint at a house with a cat. Although the cat would never have hurt Wick, but the end of the ten days, Wick was on edge and lunged very often at me and others because he was aware a cat was watching him the entire time. Likewise, the cat grew more and more comfortable and would get closer to Wick, sort of testing what interactions the cat felt comfortable doing.

It is highly dependent on both the cat and the rabbit’s demeanor. There is no negative for going slow, but there is for going too fast, so based on my experience, I recommend being very observant and provide constant supervision until you can make a clear determination.