The operation involves the removal of the ovaries and uterus. Depending on the vet the incision will be made either underneath the dog or on its side. There is very little difference between the two but some say it is easier to monitor the healing process when the incision is made on the dogs side. The wound will be stitched up to seal and protect against infection. Some vets still use stitches that need to be removed a few weeks after the operation but many, including our own vet, now use dissolving stitches. These are just as effective as permanent stitches but mean the dog does not have to go through the added stress of a trip to the vet for removal of the stitches. Dissolving stitches will remain for long enough for the wound to heal up properly, up to eight weeks. Female dogs will have a bald patch at the operation site but the fur will quickly grow back. After the op. the dog will be monitored for about an hour to check for any unusual reactions or bleeding. A female dog will take a little longer to recover than a male and she should be left in a quiet, warm room to recover. She may not want to eat straight away, although some will want feeding as soon as they get home. She should be eating normally within two days of the operation. Younger dogs will recover much more rapidly than older ones following the operation, another reason why it's best to neuter at an early age. There is sometimes a swelling at the operation site, this is a build up of serum and is not serious, however ring your vet if you are at all concerned. There should be no bleeding or discharge from the wound. i got this from a website