It is not uncommon for two rabbits to be initially aggressive upon meeting, especially if it was within one of their territory, though it happens in neutral too– so don’t take a single interaction to define your rabbits response to all rabbits! That is why most rescues will do “speed-dating”, which is exposing your rabbit to others, one by one, and see what that initial reaction is. As someone who has had my single bun for 4 years (since he was 8wo), I was definitely somewhat attached to the idea that “He will only be happy with me, because our bond is impeccable”, which I do believe, but at the same time, I’m not a rabbit. He now has another rabbit companion that, although she’s not his #1 favorite, we sort of formed a “trio”, and personally, I’m glad he has someone to cuddle with when I’m not there due to work.
That being said, there are buns who are single all their lives, have a close connection with their owner, and do end up successfully thriving more with another rabbit. While it may be bittersweet, ultimately having a companion who they can better communicate with can be really fulfilling for a rabbit.
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.