Dogs can develop sensitivities to foods so do not rule that out. You might try seeing if skipping the treats resolves the problem for example.
Another possibility is that the dog swallowed a non food item that is irritating its intestinal tract causing the vomiting. Think if you are missing any toys, socks, bones, balls etc. With my dog it was a latex squeaky toy that went down easily and filled with gastric juices and could not be vomited up or passed through. Made her sick until we got it out of her.
Dogs can get ulcers - heliobacter infections can cause them and their irritation can cause vomiting.
Your vet may want to do an x-ray to check and see if there is a problem visible that way.
You might want to look at food ingredients in comparison with other foods if a food sensitivity is the suspected problem. You can do that here
www.naturapet.com/display.php?d=comp-wiz
compare your food to Wellness or California Natural for example.
Hope this helps you!
Edited by NHolmes on August 31 2005 at 9:40 AM
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