If enemas have been ineffective at clearing the obstruction, I would try using a lubricant laxative like mineral oil. You should be able to buy a small bottle at your local drug or grocery store. I would recommend that you give him about 2 tablespoons orally. This will help coat whatever is in the intestines and help move it on through.
If there is still nothing moving after12 hours, I would then use a stimulant laxative. (My preference in a case like this is Dulcolax...1 tablet for a dog this size).
It's also important to keep your dog hydrated. Many times, if there is an obstruction, the dog will stop drinking. Just be aware of this and encourage water consumption every chance you get.
These are of course just home remedies since your vet will be gone. If you do not see normal bowel movements by monday, I would suggest returning to the vet. Surgery might be required to get rid of the blockage, especially if there is a bone involve.
Hope this has been helpful
Dr. Lyle
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