BEFORE ATTEMPTING AN INTRODUCTION, THE RABBITS SHOULD BE NEUTERED OR SPAYED. If bonding a male and female and the female has not been spayed, you should wait at least four weeks after the neutering of the buck before starting any bonding to ensure full recovery, a recently neutered male can still be fertile for weeks after the operation. So although he has been neutered he may still be able to get the doe pregnant if they are put together too early. This is something your vet can advise you on.
Bonding rabbits is not an easy thing to do, people think it is just a case of bringing the new rabbit home and putting him in with the existing rabbit and everything will be fine. More often than not these hasty introductions do not work and will result in the rabbits causing harm to each other or chasing each other about.
Rabbits are very territorial so when bonding rabbits, it is better to use a neutral space for the introduction. Neutral spaces might be a room that the bunnies have not been in before, a garage or a friends home.
When you are going to collect your new rabbit, if possible take your current rabbit with you so they can share the car ride, this can often start the bonding process.
Work with the rabbits for at least twenty minutes a day to start with and do not leave them unattended, you need to stay with them in case of fighting. If through the bonding process the rabbits do fight, they do need to be seperated when you are not working with them.
It is best to start the rabbits off in different situations such as a car ride, neutral space or even a bath tub then gradually move the situations to a more normal surrounding such as the garden or a run.