Common Foods That are Dangerous To a Chihuahua

Let's face it, most owners are guilty of feeding their Chihuahua table food at one time or another. It's hard to deny them when they look up at you with those sweet wanting eyes. But, did you know some foods we eat everyday can cause serious health problems when consumed by a Chihuahua? Here, we list some of the most commonly ingested foods that can be dangerous for Chihuahuas.



For dogs and cats, Chocolate can cause serious health problems ranging from an upset stomach to seizures and death. The root of its toxicity is believed to come primarily from a substance in cocoa known as theobromine. What makes Chocolate toxic to dogs and not to humans is that we metabolize the theobromine more quickly than they do.

While all chocolate should be avoided, some contain greater amounts of of the toxic compound theobromine than others. Bakers chocolate and dark chocolate are known to contain significantly more theobromine than milk chocolate. Less than an ounce of bakers chocolate could be enough to potentially kill a small dog such as a Chihuahua.

Symptoms of chocolate poisoning include:

  • Diarrhea
  • Increased Heart Rate
  • Vomiting
  • Hyperactivity
  • Restlessness
  • Shaking
  • Seizures

If you think your Chihuahua has eaten any chocolate, call and take them to the Vet immediately! While there is no cure, there are treatment methods that have proven effective in chocolate poisoning. Inducing vomiting and charcoal capsules may be advised.



Another common cause of poisoning in Chihuahuas comes from consuming onions. Oftentimes, owners will feed their dogs leftovers that contain onions, unknowing of the danger this posses. Whether they're raw, cooked, or powdered, onions can cause serious issues and be potentially fatal when eaten by dogs or cats.

The reason onions are so dangerous is that causes anemia (destruction of red blood cells) in dogs and cats. This can lead to liver failure, respiratory problems, lethargy, vomiting, diarrhea, and death in some cases.

The degree of toxicity will depend on how much onion was consumed as well as the size of the animal that consumed it. As with most toxic foods, smaller dogs will be more susceptible to the toxic effects of onions.


Grapes and Raisins

Grapes and raisins (both red and white) contain an unknown toxin that causes kidney failure in dogs. Symptoms usually start with vomiting and diarrhea within two to three hours. Following this, they may experience lethargy, increased thirst, and eventually renal failure within 48 hours. If you suspect your Chihuahua has gotten into some grapes or raisins, contact your vet immediately for guidance on treating their situation.

Macadamia Nuts

Macadamia Nuts

Another food that you should never leave in your Chihuahuas reach are Macadamia nuts. When ingested, they can cause your Chihuahua to experience vomiting, weakness, tremors, lethargy, paralysis and muscle and joint pains.

Even though the health complications arising from macadamia nut consumption in dogs can be serious, it's generally not considered fatal. All reported cases managed by the ASPCA and APCC have resulted in full recovery.

It's unknown as to what exactly it is in macadamia nuts that's causing it to be toxic to dogs.



If you're a coffee drinker like myself, then you're probably aware that it contains a stimulant known as caffeine. While the occasional moderate dose of caffeine is usually okay for people to drink, Chihuahuas and other dogs are simply too small to safely ingest the stimulant. It can cause restlessness, vomiting, weakness, increased heart rate, and organ failure in large doses.

It's unlikely your Chihuahua is going to jump on the table and start drinking out of your coffee cup (although it's happened before), but they may get into the coffee beans if they are left out. Be sure to keep anything containing caffeine out of their grasp. This means tea, tea bags, coffee, coffee grounds, caffeine pills, sodas, energy drinks, etc.


Cooked Rib Bones

Some people wouldn't think twice about giving their dog a bone that's left over from last nights supper. The problem with bones, especially cooked ones, is that they can splinter into dagger-sharp pieces when chewed on. If your Chihuahua swallows one of these pieces, it can cut their throat or stomach, causing potentially life threatening complications.

Chihuahuas are at greater risk with splintering bones due to their small frame and body size. Sticks and twigs from outside in the yard may splinter in the same manner and should also be avoided.


Foods Your Dog Should Never Eat