A. If you are ever worried your pet is very sick or acting strange then it's best to head to the vet. You know your pet the best.
Vomitting once is not usually considered serious, and occasional yellow bile does happen. It could be some mild tummy upset. If vomitting is more persistent and frequent or coupled with other symptoms like diarrhea, or lethargy, shaking, panting etc then things are much more serious.
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