Stomach troubles are among the most common problems dogs experience. This article reviews the different types of stomach distress, signs to watch for, important factors to consider, and general supportive care concepts often discussed in veterinary medicine.
Types of Stomach Issues
Inappetence: A reduced appetite, where a dog still eat. This may look like eating less, only eating high-value food, or needing encouragement to eat.
Anorexia: A complete refusal to eat. Veterinarians commonly use this term when a dog misses a full day’s worth of meals.
Vomiting: The active emptying of the stomach, often with posturing, retching, and abdominal effort.
Regurgitation: A passive process where stomach or esophageal contents come back up without retching.
Being able to describe what you’re seeing helps your veterinarian narrow down possible causes more efficiently.
Other signs of stomach upset may include excessive drooling, prolonged “bowing” posture, or restlessness.
Why Dogs Get Stomach Upset
There are many possible causes of stomach upset, but they are often grouped into three broad categories:
Structural: such as foreign body, gastrointestinal twist, or mass
Metabolic: including kidney, liver or other systemic diseases
Infectious: such as parvovirus, parasites, or other infectious agents
If your dog has pre-existing conditions (especially diabetes), changes in appetite or vomiting are more concerning. Ask your veterinarian what “red flags” to watch for in your individual dog.
Questions to Ask Yourself
If your dog is showing signs of stomach distress, these questions can help you organize your observations to share with your vet team:
Do I know or suspect a cause?
Ate too fast?
Got into something they shouldn’t?
Was it toxic? (see: Human Food Toxic to Dogs)
Could it cause a blockage (ingest something large, sharp, string-like)?
When did symptoms start?
How often are they happening?
Has my dog been around other dogs or out in nature recently?
Home Supportive Care
For mild stomach upset veterinarians often discuss general supportive care measures such as:
Ensuring access to fresh water. Some dogs tolerate small, frequent amounts or ice cubes better than large volumes. Flavored water may worsen nausea in some cases.
In cases of isolated vomiting where a dog otherwise appears stable, veterinarians may recommend brief gastrointestinal rest followed by small amounts of a bland diet or a prescription GI diet.
Gentle activity, such as short walks, may help support normal gastrointestinal motility in some dogs.
When appetite is reduced but a dog otherwise seems well, common strategies veterinarians may use include:
Warming food
Adding or switching to wet food (of the same type)
Using a flat plate or raised bowl
Offering food with a stronger smell
Hand feeding is sometimes discouraged unless recommended by your veterinarian, as it can contribute to dependency. Rich or fatty foods are also generally avoided, as they can increase the risk of pancreatitis.
When to Call the Vet Immediately
Non-productive or unrelenting vomiting
Vomiting blood or coffee-ground material
Puppies under 16 weeks, or unvaccinated dogs, with vomiting/diarrhea
Vomiting with lethargy or worsening symptoms
Suspected ingestion of a foreign object or toxin
If your dog ingested something questionable, seek veterinary evaluation or a Poison Helpline promptly.
Special Notes on Appetite
How concerned you should be depends partly on your dog’s usual eating habits. A Lab refusing food is more alarming than a picky Chihuahua skipping a meal.
If your dog has a significantly reduced appetite for several days, or if weight loss is noted, a veterinary checkup is important.
Stomach upset is common, but not all cases are the same. Knowing what to look for and when to seek veterinary care can improve your dog’s health and comfort.
Dog Sense contains information related to veterinary health care and does not replace veterinary advice. For any concerns about your dog's health, consult your veterinarian. Dog Sense content is not individual advice and should be considered in the context of your dog’s individual health needs.
Dr. C, DVM - a veterinarian who has worked in private practice and animal welfare while occasionally donating her time to research to improve the safety of animal products. Working in animal welfare inspired her to pursue opportunities that foster open educational dialogue that meet people where they are in their lives. In her spare time she enjoys gardening, hiking, and cooking with her family.