Introducing two bunny babies together and having them live with each other is called bonding or pairing.
Two bunnies that are not familiar with each other can 'bond' over time given the right circumstances.
Rabbits that bond with each other will slowly become used to each other as they get more and more comfortable and familiar with the sight, smell, and sound of another rabbit.
If the two rabbits are allowed to have short periods of interaction when they have a positive experience and there’s no hostility between them, gradually they’ll start to enjoy each other's company, and a bond will be formed. They’ll become accustomed to each other's smell and start to groom each other and sleep together. Eventually, they’ll spend more time together than they do apart, and a beautiful bond is formed!
How do I bond my rabbits?
Slow and steady is the key here. If you want to do it properly, you do need to take your time. Ensure both rabbits are fully vaccinated, ideally have been neutered, and are free from any disease. Your vet will be able to examine your rabbit and help out with all of these things. Winter time is a better time to start introducing them as it is likely they will be producing less hormones. If you have a rabbit living on their own in the Spring, however, it’s still better to go ahead with the bonding rather than let them live on their own for months.
Put both rabbits close to each other in separate cages for a short period each day. Allow them to be close enough to sniff each other but not so they can come into direct contact with each other. Make sure both bunnies have a safe place to retreat to if they suddenly get scared or anxious.
When they are separated, you can put something from each cage in the other rabbit's enclosure. This allows them to smell the other rabbit in a non-threatening way.
When your two rabbits are familiar with the smell and sight of each other, you can begin to allow them to mix with each other in a neutral location for very short periods of time. It’s very important to keep them supervised at all times when this is happening. Neutral ground, that neither rabbit has been on before, helps as both the bunnies won't feel the need to protect their own territory. Ensure again that there are places for each rabbit to retreat to and hide if they feel the need to. Also, ensure there are lots of enrichment objects in the space such as hay and rabbit toys and tunnels. If either rabbit shows any sign of stress or tension, separate them immediately. Do this each day, gradually increasing the time the rabbits spend together.
Allow the rabbits to spend more time in each other's company. It’s important that this time is always heavily supervised. Start to feed them together but always have two bowls and water feeders as rabbits can be very competitive over resources such as food and water.
When you see the rabbits choosing to snuggle up together and sleep, and also groom each other, this is when you have hit the bunny jackpot. Now they can be left unsupervised as they have formed a special bond.
Don’t worry if one of your rabbits seems to be the dominant one. It’s completely normal for one to come out on top in the battle of dominance. The dominant rabbit may mount the subordinate one, this is a sign of them establishing a normal hierarchy. The subordinate rabbit may also lick the dominant one. This is all normal behavior.