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12 Common Human Foods That Are Toxic to Dogs (and What to Do Instead)

12 Common Human Foods That Are Toxic to Dogs (and What to Do Instead)

We all love treating our dogs like family—which sometimes means sharing food from our plates. But what’s tasty (or harmless) to us can actually be dangerous to our pups. Many everyday foods we eat are toxic to dogs, causing anything from stomach upset to life-threatening reactions.

Here’s a list of the most common human foods that are toxic to dogs—plus safe alternatives and what to do in an emergency.


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🧄 1. Garlic & Onions (Including Powdered)

Toxic Part: All forms—raw, cooked, powdered, or dried.
Why It's Harmful: These veggies destroy red blood cells and can cause anemia.
Symptoms: Weakness, vomiting, pale gums, collapse (can take days to appear).
👉 Better Option: Stick to dog-safe herbs like parsley or turmeric for flavor.


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🍫 2. Chocolate

Toxic Part: Theobromine (especially in dark and baking chocolate).
Why It's Harmful: Causes heart issues, seizures, and even death in high doses.
Symptoms: Hyperactivity, vomiting, tremors, rapid heart rate.
👉 Better Option: Carob treats (dog-safe and chocolatey-flavored).


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🍇 3. Grapes & Raisins

Toxic Part: The entire fruit—even one grape can cause harm.
Why It's Harmful: Causes rapid kidney failure in some dogs.
Symptoms: Vomiting, diarrhea, lethargy, lack of appetite, kidney failure.
👉 Better Option: Blueberries or apple slices (no seeds).


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🥑 4. Avocado

Toxic Part: Persin (especially in the pit, skin, and leaves).
Why It's Harmful: Can cause vomiting, diarrhea, and pancreatitis.
Symptoms: Upset stomach, breathing issues (in large quantities).
👉 Better Option: Pumpkin or cooked sweet potato.


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🍷 5. Alcohol (and Unbaked Dough)

Toxic Part: Ethanol in drinks and fermenting yeast.
Why It's Harmful: Depresses the nervous system and can be fatal.
Symptoms: Disorientation, vomiting, low body temp, seizures.
👉 Better Option: Bone broth (no onion or seasoning).


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🍬 6. Xylitol (Found in Sugar-Free Gum, Candy, Peanut Butter)

Toxic Part: Xylitol (a sugar substitute).
Why It's Harmful: Causes rapid insulin release, which can lead to hypoglycemia and liver failure.
Symptoms: Weakness, tremors, seizures, collapse.
👉 Better Option: Use xylitol-free peanut butter (always check the label!).


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☕ 7. Caffeine (Coffee, Tea, Energy Drinks)

Toxic Part: Methylxanthines.
Why It's Harmful: Overstimulates the heart and nervous system.
Symptoms: Restlessness, rapid breathing, heart palpitations.
👉 Better Option: Cold filtered water or hydration additives made for pets.


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🥛 8. Milk & Dairy

Toxic Part: Lactose (dogs lack the enzyme to digest it well).
Why It's Harmful: Can cause stomach upset, diarrhea, or allergies.
Symptoms: Gas, bloating, diarrhea.
👉 Better Option: Goat’s milk (in moderation) or lactose-free pet milk.


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🥜 9. Macadamia Nuts

Toxic Part: Unknown toxin (still being studied).
Why It's Harmful: Causes muscle tremors, weakness, vomiting.
Symptoms: Stiffness, fever, lethargy.
👉 Better Option: Dog-safe peanut butter (xylitol-free) or plain almonds in moderation.


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🥄 10. Salt

Toxic Part: Excess sodium.
Why It's Harmful: Can lead to dehydration, high blood pressure, or sodium poisoning.
Symptoms: Vomiting, diarrhea, tremors, seizures.
👉 Better Option: Low-sodium treats and broths formulated for dogs.


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🍟 11. Fatty, Fried, or Spicy Foods

Toxic Part: Excess fat and seasonings.
Why It's Harmful: Can cause pancreatitis and digestive upset.
Symptoms: Vomiting, diarrhea, abdominal pain, lethargy.
👉 Better Option: Lean meats like cooked turkey or chicken (no skin, no spice).


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🥚 12. Raw Eggs or Meat (Contaminated)

Toxic Part: Bacteria like Salmonella or E. coli.
Why It's Harmful: Can cause severe gastrointestinal illness in dogs and humans.
Symptoms: Vomiting, fever, lethargy.
👉 Better Option: Lightly cooked eggs or freeze-dried raw meat from trusted sources.


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🚨 What To Do If Your Dog Eats Something Toxic

1. Don’t wait for symptoms. Call your vet or emergency line immediately.


2. Keep these numbers handy:

Pet Poison Helpline: 1-855-764-7661

ASPCA Animal Poison Control: 1-888-426-4435



3. Act fast. Time can make a huge difference in outcomes.




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Final Thoughts

We show love through food—but for our dogs, the best love is safe food. Always check before sharing something new from your plate. And when in doubt, go for dog-approved snacks that are made to be both tasty and safe.

Your dog doesn’t need a bite of your chocolate bar or guacamole—just your time, your love, and a treat they can enjoy without a trip to the vet.

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