This list might be helpful,
http://www.yorkietalk.com/forums/sic...g-dosages.html. It mentions baby aspirin and the dosage; it also discusses which medication to not give. The problem with giving medical advice is that some people might think baby aspirin is the same as children's Tylenol, and this could kill the pet. Other people have given "children's cold medicines" instead of baby aspirin. The aspirin, while safe in most cases could cause intestinal bleeding for some dogs, that's why most people think it's best to recommend a vet.