BONUS! “Ups! What Did You Eat?” – Dog Food-Related Vomiting & Diarrhea Explained!
- Ahmet Bosnak
- Feb 20
- 2 min read

Why Do Dogs Sometimes Get Sick from Their Food?
Every dog owner has experienced it at least once – one moment, your pup is happily wagging their tail, and the next, they’re vomiting on your new carpet or rushing outside for an emergency poop! 💩😱
But why does this happen? Is it the food itself, improper storage, or just a sensitive stomach? In this fun (yet very important) guide, we’ll talk about common reasons behind dog food-related vomiting and diarrhea and how to prevent these messy situations! 🦴🐾
Top Reasons Why Dog Food Can Cause Vomiting or Diarrhea
🔍 Sudden Diet Changes – Switching food too quickly can shock your dog’s digestive system and lead to an upset stomach. Always transition gradually over 7-10 days!
🚨 Expired or Poorly Stored Food – Moldy kibble, rancid fats, or spoiled wet food can cause food poisoning. Check expiration dates and store food properly!
⚠ Food Allergies or Sensitivities – Some dogs are allergic to chicken, beef, soy, or grains. If vomiting or diarrhea is frequent, a food trial may be needed.
🍖 Fatty or Spoiled Human Food – Dogs can be sensitive to rich, fatty table scraps or leftovers, leading to pancreatitis (a serious condition!).
🤢 Contaminated Food (Bacteria & Toxins) – Salmonella, E. coli, or mycotoxins (from moldy food) can make dogs very sick. Always buy high-quality, reputable brands.
How to Properly Store Dog Food to Prevent Illness
🐶 Dry Food (Kibble):
✔ Store in an airtight container to prevent exposure to air, humidity, and pests.
✔ Avoid keeping kibble in its original bag after opening – transfer to a sealed bin.
✔ Use within 6 weeks after opening for freshness.
✔ Keep away from direct sunlight and heat (spoiled fats = upset stomach).
🥫 Wet Food (Canned/Pouches):
✔ Refrigerate opened cans and use within 3-5 days.
✔ Do not leave wet food out for more than 2 hours – bacteria grow fast!
✔ If the can is dented or smells weird, toss it!
Is It the Food or a More Serious Issue?
Sometimes vomiting or diarrhea isn’t just about the food.
Here’s when to CALL YOUR VET IMMEDIATELY:
🚑 If vomiting/diarrhea lasts more than 24 hours
🚑 If there’s blood in vomit or stool
🚑 If your dog is lethargic, weak, or refuses to eat
🚑 If dehydration signs appear (dry gums, sunken eyes, loss of elasticity in the skin)
Take-Home Messages 🏡
✔ Introduce new food gradually over 7-10 days to avoid stomach upset.
✔ Always check food expiration dates & store food properly in sealed containers.
✔ Be mindful of food allergies and sensitivities – monitor symptoms carefully.
✔ Know when to call the vet – persistent vomiting/diarrhea is never normal!
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