Can A Puppy Throw Up Because Of An Empty Stomach. As we mentioned above, clear liquid vomit is typically a result of a dog vomiting on an empty stomach. A classic sign that this is the problem is if your pup throws up yellow liquid (or it may be white/yellow and frothy), usually first thing in the morning.
But, it can also be a yellow foreign object or substance your dog may have ingested, so it's important to not dismiss yellow bile as a sign of hunger. You need to call up your vet immediately and have your. Some dogs vomit when their stomachs are empty for too long, perhaps because of irritation from the stomach acid that collects there.