Aww how stressful, I’m sorry! Both rabbits have been spayed/neutered, correct? Just checking because that is essential for bonding.
I wouldn’t recommend using any room they have had access to for bonding. With tougher bonds especially, using a space that’s as neuteral and unfamiliar as possible is very important. Even though neither is in the room full time, I can guarantee that each rabbit thinks it’s their’s. 😉
For the best chances of success, here’s what I would do:
– Start swapping which rabbit is in which pen every day or two (this is called “pre-bonding”). Keep the litter boxes a little dirty when you do this. This helps mingle scents even more. If the enclosures are already side-by-side, great. If not, I would rearrange so they are side by side (ensuring they can’t nip through the fence). You’ll want to observe them for relaxed behaviors around each other, especially after you swap sides. If they start running the fence and trying to “get at” each other, then keep up the pre-bonding until they relax. This usually takes a couple weeks but could be longer or shorter.
-when you start bonding sessions, continue the side swaps. Choose a very neutral, and maybe slightly stressful space. This could be the bathroom, a friend’s house, a basement they’ve never been in, etc. Not sure what you tried previously to re-bond them, but I’ve had the best luck using very large bonding areas, so like 2-xpens linked up. If that’s not possible, use the largest area you can. Be right in there with the buns at first, and don’t be afraid to have your hands on them a lot at first (wearing thick gloves as protection! I often use oven mits lol). When they approach each other and come nose to nose, pet them both a lot. This simulates grooming and helps build positive associations and calms them. Eventually you will ease off this but your goal is to break the cycle of them fighting and build up some good vibes so they can interact without it escalating to serious aggression. Start with short sessions (even 30-sect to a minute), with the goal of ending the date before fighting occurs so you always end on a good note. Once you start increasing the time scuffles are of course going to happen, but always try to calm them down and end on a positive note, even if that’s you petting them both or them ignoring each other.
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The answers provided in this discussion are for general guideline purposes only. The information is not intended to diagnose or treat your pet. Seek the advice of your veterinarian or a qualified behaviorist.