[*]about how many rabbit clients does the veterinarian see in a year?
[*]how many spays/neuters OF RABBITS has the veterinarian has done in the past year?
[*]what was the success rate?
[*]if any were lost, what was the cause?
[*]does the veterinarian remove both uterus and ovaries? (they should)
[*]does the veterinarian do "open" or "closed" neuters? (closed is preferable--let your veterinarian explain the difference)
[*]is entry to the testicles made through the scrotum or the abdomen? (Entry via the abdomen unnecessarily increases the trauma for male rabbits)
[*]does the veterinarian require withholding of food and water prior to surgery in rabbits? (It is better not to do this--rabbits can't vomit, so there is no risk of that during surgery, and rabbits should never be allowed to get empty digestive tracts)
[*]what anesthetics are used (some veterinarians are quite successful with anesthetics other than isofluorene, but the bunny is "hung over" after surgery, which increases the probability that s/he will be slow to start eating again, which can lead to serious problems if not dealt with.
[*]Review the procedure (op and immediate post-op) with your vet. Ask how problems will be detected: how often will they (the veterinarian and the techs) look in on your kid and what will they look for?. What will they do pre-op to find any potential problems? How will they support your bun in the hours after surgery: O2, warmth, quiet (barking dogs and yowling cats in the next cage are probably not helpful), and stimulation? What are they going to do to make it come out right?! Ask questions! That will get your veterinarian's attention. Let them know you're concerned and that you'll be paying attention.
These were taken from
http://www.rabbit.org/faq/sections/spay-neuter.html