8 Food Items You Should Never Feed Your Dog

Written by: Karuna Subbiah

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Time to read 10 min

While your dog's pleading eyes may be hard to resist, it's crucial to remember that there are certain human foods you should never share with them. Equally important is ensuring that potentially harmful foods are securely stored and out of your dog's reach. 

Why is it Important to Know Which Foods are Harmful to Dogs?

Knowing which foods are harmful to dogs is of most importance because our canine companions rely on us for their well-being. Dogs have unique dietary requirements and sensitivities, and some foods that are perfectly safe for humans can be toxic to them. Being aware of these harmful foods helps prevent potential health issues and discomfort for our dogs. 


It allows us to make informed choices, ensuring that their diet remains safe, nutritious, and free from ingredients that could lead to serious illnesses or even prove fatal. Ultimately, this knowledge empowers us as responsible pet parents to provide our dogs with the best care and nutrition they need to lead happy and healthy lives.


Now, let’s dive in the list of 8 toxic foods for dogs:

1. Chocolate - The Sweet Poison

Why is Chocolate Harmful to Dogs?

Chocolate is a beloved treat for many, but it's one of the most toxic foods for dogs. You might wonder, why is chocolate harmful to dogs? 


Chocolate contains substances called theobromine and caffeine, which dogs metabolise more slowly than humans. As a result, these compounds can build up to toxic levels in their system.

Signs of Chocolate Poisoning in Dogs

If your dog accidentally ends up eating chocolate, it is important for you to know the sign of chocolate poisoning. You might notice symptoms like vomiting, diarrhoea, increased heart rate, restlessness, and even seizures. 


These signs can range from mild to severe, depending on the amount and type of chocolate ingested. Dark chocolate and unsweetened baking chocolate contain higher levels of theobromine and are more dangerous.

What to Do if Your Dog Eats Chocolate?

If you suspect your dog has ingested chocolate, it's crucial to act promptly. Contact a vet or an emergency pet helpline for guidance. They may ask about the type and amount of chocolate consumed, your dog's size, and any symptoms observed. In some cases, they might recommend inducing vomiting or other treatments.

2. Onions and Garlic - The Culprits in Your Kitchen

Onions and garlic are kitchen staples that bring flavour to our meals, but they are among the top toxic foods to dogs.

What Makes Onions and Garlic Toxic to Dogs?

These ingredients contain compounds that can cause oxidative damage to a dog's red blood cells, leading to a condition called hemolytic anaemia. The toxic components are present in both raw and cooked forms, so even cooked onions and garlic are not safe for dogs.

Symptoms of Onion and Garlic Poisoning in Dogs

The symptoms of onion and garlic poisoning in dogs can include weakness, vomiting, diarrhea, and pale gums. These symptoms might not surface immediately, making it crucial to keep a close eye on your pet if they've ingested any amount of these ingredients.

Safe Alternatives to Onions and Garlic in Dog Food

Some safe alternatives for these items for your dog include dog-friendly flavour enhancers like basil, oregano, or parsley. These herbs can add taste without posing risks to your furry friend.

3. Grapes and Raisins - Tiny Yet Toxic

Grapes and raisins may seem harmless, but they are incredibly dangerous to dogs.

Why are Grapes and Raisins Dangerous for Dogs?

The exact toxic substance remains unknown, but these fruits can lead to kidney failure in dogs. Even a small amount can be harmful.

Signs of Grape and Raisin Toxicity in Dogs

Signs of grape and raisin toxicity in dogs may include vomiting, diarrhea, lethargy, and a loss of appetite. In severe cases, it can progress to kidney issues, which can be life-threatening.

Alternatives to Grapes and Raisins as Dog Treats

Instead of these risky fruits, opt for safe alternatives like blueberries, slices of apple (without seeds), or pieces of carrot to provide your dog with healthy and tasty snacks.

4. Tomatoes - More Than Just a Salad Ingredient

When it comes to feeding your dog, it's crucial to be cautious about the foods you offer. One such item that raises questions is tomatoes. Are tomatoes safe for dogs, or should they be avoided altogether?

Are Tomatoes Toxic to Dogs?

Tomatoes, in moderation, are generally considered safe for dogs. They are a source of essential nutrients like vitamins C and K, as well as potassium. However, it's crucial to understand that not all parts of the tomato are safe.


The green parts and stems of tomatoes, as well as the leaves, contain a substance called solanine, which can be toxic to dogs. Solanine can lead to symptoms of tomato toxicity, including gastrointestinal upset.

Symptoms of Tomato Toxicity in Dogs

If your dog consumes the green parts or stems of a tomato plant, they may experience symptoms such as drooling, upset stomach, diarrhoea, vomiting, and, in severe cases, confusion or weakness. However, it's important to note that these symptoms are rare, as dogs typically don't consume large quantities of tomato plant material.

What are the Safe Ways to Put Tomatoes into Your Dog's Diet?

If you'd like to share some tomato goodness with your pup, opt for ripe, red tomatoes with the green parts removed. Small amounts of ripe tomato can be a healthy addition to your dog's diet. You can dice them into tiny pieces and mix them with your dog's regular food or offer them as a dog treat.


However, always be mindful of your dog's individual sensitivities and consult your veterinarian if you have concerns. Remember, moderation is key, and it's crucial to focus on a balanced diet for your canine companion.

5. Raw Meat - Risky Business

Another dietary concern for dogs is the consumption of raw meat. Is raw meat a healthy choice for dogs, or does it pose potential dangers?

Is Raw Meat Healthy for Dogs?

While some advocates of raw feeding for dogs argue that it's a natural and nutritious choice, it comes with certain risks. Raw meat can be contaminated with harmful bacteria like Salmonella and E. coli, which can cause food poisoning in dogs, just as it can in humans.


Feeding your dog raw meat can potentially lead to gastrointestinal upset, diarrhoea, and even serious illness. The bacteria in raw meat can pose health risks not only to your dog but also to your family members if proper hygiene measures aren't followed.

Safe Raw Meat Alternatives for Canines

If you're considering a raw diet for your dog, it's essential to consult with your vet to ensure it meets your dog's nutritional needs while minimising health risks. Many commercial dog foods offer the benefits of raw feeding without the safety concerns.

6. Alcohol - No Cheer for Fido

Alcohol is often seen as a part of celebrations, but it should never find its way into your dog's dish. Why? Because alcohol is extremely dangerous for dogs. Even a small amount can lead to severe health issues.

Why is Alcohol Dangerous for Dogs?

Alcohol affects dogs differently than it does humans. Their smaller bodies and unique metabolism make them highly sensitive to alcohol. Even a tiny sip can result in alcohol poisoning. Ethanol, the active ingredient in alcoholic beverages, can cause depression of the central nervous system, leading to a range of symptoms.

Signs of Alcohol Poisoning in Dogs

Recognizing alcohol poisoning in dogs is crucial. Symptoms may include vomiting, diarrhoea, excessive drooling, disorientation, coordination problems, seizures, and even coma. 

The Importance of Keeping Alcohol Out of Reach

Pet parents must take extra precautions to ensure that alcohol is kept well out of their pet's reach. Accidental ingestion can occur at parties or gatherings when alcoholic beverages are left unattended.

7. Coffee & Caffeine - A Morning Brew Gone Wrong

Your morning cup of coffee may be a necessity, but it's a potential danger to your dog. Coffee and caffeine-containing products should be kept well away from their curious noses.

How Do Coffee and Caffeine Affect Dogs?

Caffeine is a stimulant that can lead to a range of symptoms in dogs, including restlessness, rapid breathing, heart palpitations, tremors, seizures, and even death. The smaller the dog, the more significant the impact, as their bodies can't process caffeine effectively.

Symptoms of Caffeine Poisoning in Dogs

Caffeine poisoning can escalate rapidly. Signs to watch for include hyperactivity, panting, vomiting, diarrhoea, muscle tremors, and an elevated heart rate. Immediate medical attention is essential if you suspect your dog has ingested caffeine.

The Hidden Sources of Caffeine in Your Home

Caffeine can hide in unexpected places like energy drinks, tea bags, chocolate, and some medications. Pet parents should be vigilant about what their dog has access to, even seemingly harmless items like leftover coffee in a cup.

8. Nuts - Crunchy but Not for Canines

When it comes to feeding your beloved canine companion, there are certain foods that should never make their way into their bowls. Nuts, those crunchy and delicious snacks for us, fall into this category. While we humans enjoy the taste and health benefits of nuts, they can pose various risks to dogs. Here's a closer look at why nuts are harmful to dogs, the specific nuts you should be cautious about, signs of nut toxicity, and some safe alternatives to treat your furry friend.

Why Are Nuts Harmful to Dogs?

Nuts, despite their nutritional value for humans, can be problematic for dogs due to several reasons. First and foremost, nuts are often high in fat, which can lead to digestive issues and even pancreatitis in dogs. 


Additionally, some nuts contain substances that are toxic to canines. For instance, macadamia nuts can be particularly dangerous for dogs, causing symptoms like weakness, vomiting, and tremors. Even salted nuts can lead to sodium ion poisoning in dogs.

Common Nuts That Pose Risks to Dogs

While it's crucial to be cautious with all types of nuts, some are more hazardous to dogs than others:


  1. Macadamia Nuts: These are especially toxic to dogs and can result in severe symptoms even in small amounts.
  2. Walnuts: Walnuts contain a toxin called tremorgenic mycotoxins, which can lead to neurological issues in dogs.
  3. Pecans: High in fat and can cause digestive problems in dogs.
  4. Almonds: They are not as toxic as some other nuts but can still cause stomach upset.
  5. Salted Nuts: High salt content can lead to sodium ion poisoning, resulting in excessive thirst and urination.

Symptoms of Nut Toxicity in Dogs

If your dog consumes nuts or you suspect they have, watch out for these potential symptoms of nut toxicity:


  • Vomiting
  • Diarrhoea
  • Weakness
  • Tremors or seizures
  • Increased body temperature
  • Rapid heart rate
  • Elevated blood pressure

Nut-Free, Vet-Approved Treats for Your Dog

While nuts may be off the menu for your canine companion, there are plenty of safe and delicious alternatives you can offer as treats:


  1. Carrots: Crunchy and low in calories, carrots make excellent treats for dogs.
  2. Blueberries: Packed with antioxidants and vitamins, dogs often enjoy these sweet treats.
  3. Apples (without seeds): Apples are a good source of fibre and vitamins for dogs.
  4. Pumpkin: Cooked and plain pumpkin can be a tasty and beneficial snack.
  5. Broccoli: In moderation, steamed broccoli is a healthy treat.

Concluding Thoughts

In conclusion, being a responsible pet owner means being aware of foods that can harm your dog. Nuts, with their high fat content and potential for toxicity, should never be on your dog's menu. Remember to keep all harmful foods out of your pup's reach to ensure their safety and well-being.


By avoiding these 8 dangerous foods, you're taking a significant step towards keeping your dog safe and healthy. Responsible feeding is an essential aspect of pet ownership, and it's always better to be cautious when it comes to their nutrition. Ultimately, your furry friend depends on you for their well-being, and with the right nutrition, you can keep them happy and healthy for years to come.


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