Ok this is helpful!
So one thing that jumps out to me is that all of these methods were in pretty small spaces. For tougher bonds, the space you use is extra important. I’ve had the best luck in very large, very neutral spaces, such as at least 2 x-pens linked up in the backyard, the garage, or at friend’s house. The idea is that when you give the rabbits space to move around and get away from each other, a chase is less likely to immediately escalate to a tornado. It’s also important to end on a good note. If you end the session every time they fight, they learn that fighting will make that “other rabbit” go away. So either keep sessions short and end them before they fight, or wait until they are calm again before ending the session (even if you need to pet them to calm them down).
patience is also very important. I don’t think you need to stick with a method that isn’t working for days, but sometimes it takes some time for progress to occur. Focus on preventing fighting and encouraging calm behavior. So after you do the pre-bonding I mentioned in the other post and start bonding sessions again, don’t be afraid to pet them a lot during bonding sessions, especially when they approach each other. When they go nose to nose, pet them both and swap scents. This helps them think the other is grooming them and helps build some positive associations. Eventually you will become more hands off, but at first it can really help get past the initial tense interactions.
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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.