All animals have very particular rates of metabolism, which is the process of breaking down food in order to produce energy.

Thus, some foods which are not poisonous for humans and other species of animals can be dangerous for dogs.

There are specific foods that you should never feed your dog. If you are worried about something your dog consumed, please call your veterinarian without delay.

The following six examples of food should not be fed to dogs.

dog foods to avoid

1. Macadamia Nuts

  • The precise toxin contained in macadamia nuts and mechanisms of action responsible for signs of poisoning in some dogs are not known.
  • The ingestion of the toxin is associated with a nonfatal syndrome characterized by vomiting, ataxia, depression, hyperemia, weakness, panting, swollen limbs, and tremors.
  • Read this: Can dogs eat nuts?

2. Onions

  • Onions can injure red blood cells in dogs causing them to become weaker and move around less.
  • The toxic substances (organosulfoxides) are found in cooked, raw or dehydrated onions.
  • These toxic compounds react with dog’s metabolism after consumption, interfering with the ability of red blood cells carrying oxygen to the body.
  • Clinical signs linked to onion’s toxicity are lethargy, anemia, trouble breathing, vomiting, dark-colored urine, yellow gums and whites of eyes.

3. Garlic

  • Garlic contains thiosulphate, which can cause hemolytic anemia (red blood cells “explode”), liver damage and death.
  • In fact, it is not common for dogs to eat sufficient raw garlic to cause severe problems.
  • However, exposure to concentrated forms of garlic (e.g. garlic powder) can put dogs at risk of poisoning.
  • Affected dogs may appear weak and they may appear to tire after mild exercise.
  • Their urine may present an orange-tinged to dark red color.

4. Rhubarb Leaves

  • Rhubarb can be toxic for your dog.
  • The leaves of the rhubarb are the most toxic pieces of this plant.
  • They contain oxalate crystals, which diminish the calcium concentration in the dog’s body.
  • Clinical signs of rhubarb poisoning include drooling, loss of appetite, vomiting, diarrhea, lethargy, weakness, tremors and bloody urine.
  • In some severe cases, rhubarb toxicity can cause sudden renal failure.

5. Grapes and Raisins

  • The precise substance that causes the toxicity is not yet identified; it has been shown that small amounts of grapes or raisins can be fatal for a dog.
  • The most frequent symptom of grape or raisin toxicity is vomits and diarrhea, usually within a pair of hours after ingestion.
  • After 24 hours of ingestion vomit and fecal contents may contain pieces of grapes or raisins.
  • The dog may also present anorexia, lethargy, abdominal pain, dehydration, passing only a small amount of urine.
  • If renal failure progresses dog will usually fall into a coma.

6. Avocado

  • Avocado contains a toxin named persin.
  • Specifically, the fruit’s seed, bark and leaves are composed of this toxic.
  • However, only certain animal species are poisoned by persin. Avocado is not poisonous to dogs.
  • The bigger risk of avocado to dogs is a foreign body obstruction, which can happen if the dog swallowed the whole large, round avocado seed; it can get trapped in the esophagus, stomach or intestinal tract of dogs.

Most dogs are especially attracted to what they see their owner eating. It is important to be conscious that some foods can be very risky to dogs. Take caution to make sure your dog never gets access to the foods enumerated above.

See also:

  1. 7 Dangerous Christmas Foods For Your Dog
  2. Can dogs eat popcorn?