neutering/ was introducing adult males

Question
Thanks SO much for your help Kim. Now one more quick question. When I find a vet for these bunnies, what kinds of questions should I be asking, or things should I be watching out for? I only ask because my sister just had a horrible experience getting her two female bunnies spayed. The vet's office told her they did work on bunnies, but when she went to pick them up after their surgury...the office girl told her that the staff made bets on whether or not they were male or female. They didn't know for certain until each bunny was opened up on the table!!! The next day, one of them died! I know neutering isn't as invasive, and I have an excellent vet...but he doesn't do rabbits. My sister's experience is the only reason I haven't already had my boys done. I don't know who to trust!

Thanks again for you help.

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Followup To
Question -
Hello. I know that generally, two adult male rabbits cannot be kept together...but I also know that there are exceptions to every rule! I have an 8 month old rex named Trevor who has been our only rabbit until recently. A friend gave me a 2yr old male rabbit (dutch?) that was from a failed attempt at raising meat rabbits. He'd never lived outside a wire cage until he came here. He's acclimated to house life beautifully, even gets along great with my cats. He and Trevor can see eachother from their cages at all times and can visit nose to nose when they each have their turns out for play time. The first few days there was alot of growling and biting of the cage...but now, two weeks later, the only signs of aggression are rapid digging and they're both still rub marking like crazy! I plan to have both neutered soon and I'm curious if there's any chance, given AMPLE time, that they will ever be able to have playtime at the same time? At this moment Stumpy (the dutch) is LAYING outside Trevor's cage, up against the bars and neither are showing ANY signs of aggression or even high interest. Trevor is just grooming himself. Thanks in advance for your opinion!
Answer -
Yes, it certainly is possible to bond 2 male rabbits, if the rabbits in question agree.  I've had male-male pairs, although they were generally older.  Once they are neutered, you can try the steps at http://www.rabbit.org/faq/sections/introductions.html.

Even if they don't bond, they might consent to playing together without fighting, although ideally they would bond to each other.

Rabbits actually lay outside each other's cages to say na na, I'm out and you're not, but at long as they aren't fighting through the bars, that's a good sign!

Kim

Answer
Two things - a FAQ on how to find a good rabbit vet, including questions to ask, http://www.rabbit.org/faq/sections/vet.html, and a list of rabbit vets (hopefully someone is in your area).  You can find lists of vets at http://www.rabbit.org/care/vets.html and http://homepage.mac.com/mattocks/morfz/PB_vets.html.

A rabbit-knowledgeable vet will be able to tell by looking at the rabbit's external parts whether they are male or female.  They will not tell you to fast the rabbit after midnight.  If the rabbit is a female and is spayed, they will give you the option of painkillers (which are great for that night and sometimes the next couple of days).  

I hope you are able to find someone who is more responsible that the vet that your sister had.

Kim