TL;DR: Dry heaving is a life-threatening veterinary emergency often signaling Gastric Dilatation-Volvulus (GDV or "Bloat"), where the stomach twists and cuts off blood flow. If your dog is retching without producing anything, seek immediate emergency veterinary care.
What does it mean if my dog is dry heaving?
Dry heaving, also known as non-productive retching, occurs when your dog makes the physical motions of vomiting—such as abdominal contractions and gagging—but fails to produce any stomach contents. While it can sometimes be associated with respiratory issues or simple nausea, it is often the hallmark sign of a serious internal blockage or gastric torsion.
Is dry heaving in dogs considered a life-threatening emergency?
- Treat repeated attempts to vomit without success as a high-priority, life-threatening emergency.
- This behavior is the primary symptom of Gastric Dilatation-Volvulus (GDV), commonly known as "Bloat."
- In these cases, the stomach fills with gas and twists, cutting off blood flow to vital organs.
- Without immediate veterinary intervention and surgery, GDV can be fatal within a matter of hours.
How can taking photos and videos of my dog help the vet with triage?
- Capture a quick 10-second video of the behavior so the vet can differentiate between reverse sneezing, a "honking" cough (like Kennel Cough), and true unproductive retching.
- Take a photo of your dog's side profile to help the vet identify if the abdomen looks distended or tucked.
- Show these visuals to the emergency team to help them prioritize your dog's care the moment you walk through the door.
Clinical Context (Merck Veterinary Manual)
In dogs, nonproductive retching, hypersalivation, and restlessness may indicate gastric dilation and volvulus. Physical examination may reveal an enlarged or tympanic abdomen, abdominal pain, and/or splenomegaly. Progression to volvulus can lead to hypovolemic shock, with signs including a weak pulse, rapid heart rate, and systemic hypotension. Prompt diagnosis and intervention are crucial due to the risks of endotoxemia, hypoxemia, metabolic acidosis, and disseminated intravascular coagulation.
Chapter: Gastroenterology, Emergency, General Principles
Source: The Merck Veterinary Manual, 11th Edition (Page 387)