Besides which, we spoke to several different vets (since we changed vets when Zander was about ten months old), and all of them said that cats do not pose a predatory threat to rabbits. They're just not big enough to seriously consider something as stocky as a rabbit prey.
I'm sorry, but this is not true at all. When my sister had cats, they regularly killed rabbits, and brought them home. She would find her cat guarding a dead rabbit on the porch often. And, even if the cat does not actually kill a rabbit, it can severely injure it with its claws and/or teeth, causing an absess or infection. Also, rabbits have been known to die simply from fright, if they are locked in a cage and a predator is trying to get them. I have seen this happen. If there aren't many cats in your area, that's better ... but please do not think your rabbits are safe from any cat. The fact of the matter is, cats can and do kill and injure rabbits all the time.