I have four 6 1/2 week old dachshund, all of them are dry heaving and periodically throwing up white foam. There is also a 6 month old dachshund that is at our house a lot that also vomited white foam last night. They are all still eating, drinking, playing, and going potty normally. I just don't know if I should be worried and I can't afford to take them all to the vet.