After a dog eats a bone, if anything serious is going to happen, how long will it take to know if something is wrong?

You will usually know with in the first 24 hours if there is a blockage. But things like stomach lining tears can take a few days to present their problems.

If your dog is gagging or retching or vomiting, or not able to have a bowel movement, take him to the vet ASAP.

Feeding your dog bread and in extreme cases soaked cotton balls will help cushion the bones and help prevent them from tearing the lining.