Since he’s neutered, you are in good shape to get started with the process. Getting some good temporary housing in order is essential, as Wick&Fable mentioned. Extra x-pens and NIC-cubes are great for this, because you can build temporary cages or pens and then re-configure them once they are bonded.
Most cases, M-F pairs seem a bit easier, but M-M pairs are common too. If there is a rescue near you they can often help you find a good match for your bun. 🙂 Age, size, breed don’t matter at all, it’s more about the rabbit’s personalities. And a bun’s personality around humans really doesn’t predict how they will be with other rabbits. Most pairings DO work out eventually, it’s just that some take a lot more work than others! But, a bond taking a lot of work doesn’t mean it won’t be a good bond. Two of my pairs that had the toughest bonding processes ended up with the closest bonds, so somethings are worth the wait!
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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.