You cannot put two rabbits together unless both have been spayed or neutered. Even if one is a baby. There is going to be aggression and fighting. When rabbits fight, they can severely injure each other. One and a half years old is certainly not too old to be neutered. One of the rabbits I have now was neutered when he was 4 years old. If you want a companion for Cotton, you should go ahead and get him neutered now. After his surgery, you will need to wait a month for the hormones to die down, before you can start bonding him with another rabbit. The other rabbit will have to be spayed or neutered, also with a month passing since the surgery before bonding is attempted. Many rescues and some shelters have rabbits that are already spayed or neutered so maybe you could find a companion for him in a rescue. It’s usually easier to bond a neutered male with a spayed female, but you can bond same gender rabbits. But they definitely need to be spayed or neutered first.

Definitely not too old to be neutered!

With a rabbit-savvy vet, it should be no problem.

Okay so.. a couple of things

1. Bunnies that aren’t neutured have a very hard time bonding with other bunnies (fixed or not) because of territorial issues and agressive nature towards other bun because of this

2. Male x male is one of the harder pairs to bond and that’s when they are both neutured as it is!

I would recommend getting a vet appointment with a rabbit savvy vet and ask them what they think about your bun getting neutured. If he’s in good health it shouldn’t be a problem getting him fixed safely from a good vet

If you can’t get him neutered it would probably be best not to get him a friend though because it will probably be basically impossible to bond him correctly (even if they act bonded his hormones might make him get into a fight and rabbit fights csn lead to injuries or death if no one is there to stop them)

If you do get him neutured and a new bun I would actually suggest seeing if any shelters around town have bunnies and let them do bunny dates (you’d have to wait a month after your male heals though) cause this way the bunny is more likely to already be fixed as well and therefore you will have a better idea if it will work out (bunny dates are when you bring your bun to the shelter and see what bun he gets along with)

If shelter buns aren’t an option though you should get a female wait till you csn spay her and then wait another month at least toll trying to bond them so her hormones can die down

Again only if you can get your bun neutured

During the wait time for both the baby to grow up get spayed and healed for a month you should pre bond which includes switching the buns in living areas so they get used to each others scents

Never bond a baby with an adult because the baby will get hormonal amd then most likely agressive towards your male rabbit and if they fight because of this it’s almost impossible to re introduce them because rabbits hold grudges

So basically though if he can’t be neutured it would be safer to not get him a friend. To many risk factors

Edit: As others said above though it shouldn’t be a problem getting him neutured

Are you in the US? If you want to give your general area we could possibly help locate a rabbit savvy vet.

Your boy is adorable

Yes, both buns will need to be fixed. I love his name by the way .

All bunnys will need to be neutered/spayed before you can bond them. I also want to add that the sex of the new bun you get really does not matter, despite popular belief. Its personality that matters. If your rabbit is rather dominant, youll want to try to find a naturally submissive bun to bond with him. Visa versa if your rabbit is often submissive. If your bun is independent, youll want to find another independent bun to bond with him so he doesnt get overwhelmed.

*I had a trio of males, and a current bonded pair of boys

Good luck at your appointment!