Hi there,
I don’t think you should have your grandma continue sessions without you, as she doesn’t have the same understand of how and when to intervene.
It also seems like they might be getting into an aggressive cycle, so a break while you are on vacation is not the worst thing. More harm can be done to their progress by letting their aggression get out of hand.
In the video Domino looks to be nipping Coco to get her to move? But Coco looks to be frozen, hard to tell if possible because she is afraid?
Can you describe a few more details about the process so far, that will help us give good next steps?
– How large is the bonding space?
– How neutral is the bonding space? Is it someplace either rabbit has been? Is it within sight or smell of their home turf?
– Have you done any pre-bonding (cage swaps, etc)?
Regardless, you will need to work on breaking the aggressive cycle that seems to be building. I know there is conflicting info on “letting them sort it out”, but from your description and the video it looks like things are getting worse. So once you are home, focus on building trust and good associations between them. When Domino approaches Coco, do not let him bite. Start petting them both and swap scents. Pet pet pet pet until they are calm. This will help build a calm association and trust between them.
Again, please don’t have your grandma continue without you there. People do differ in how much fur pulling they will allow during bonding, but things can escalate very rapidly in bonding fights, and if you aren’t sure when to intervene it could result in injury, or at least make it much harder to bond them.
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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.