Are acorns poisonous to dogs? - Vet Help Direct (2024)

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Rachel Kenvyn BVSc (Distinction), PgC (SAS) GPCert (SAS) MRCVS

October 28, 2020 • 391 Shares0 Comments

Acorns, the nuts of the oak tree, begin to fall in the autumn months. They can be a temptation for your dog, who may be sniffing around outside. Acorns can cover vast amounts of ground space during autumn and winter, providing us with that familiar autumnal scene.

Dogs have an inquisitive nature and they love to explore the world through their nose and mouth. They may pick up and eat these acorns if allowed to. However, acorns are toxic to dogs if ingested. So if you think that your dog has eaten them, it is important to contact your vet immediately.

Unfortunately, your dog does not know that what they are eating is harmful to their health. Keep reading below to find out why acorns are toxic to dogs, what the symptoms of acorn toxicity are and how to prevent your best friend from eating acorns in the first place.

Why are acorns toxic?

Acorns, as well as oak leaves, originate from Quercus species trees and contain tannins and potentially other substances which are toxic to dogs if ingested. Immature acorns tend to contain the highest levels of tannins.

If the tannins and other toxic substances are ingested by a dog in significant quantities, an upset stomach may result and in severe cases kidney failure, liver damage and death are possible. Acorn toxicity must be treated seriously, as a delay in treatment may lead to permanent damage.

Ingestion of acorns, which are large and hard objects may cause internal damage or blockage within the gastrointestinal tract. Your dog may require surgery to remove acorns that become blocked in the stomach or intestines. Failure to do so could prove fatal. Ingestion of large acorns could also pose a choking hazard, which is an emergency situation.

What are the symptoms of acorn toxicity?

The symptoms of acorn toxicity may appear within a few hours of ingestion and generally involve gastrointestinal signs, such as:

  • Drooling
  • Retching
  • Vomiting
  • Diarrhoea (may be bloody)
  • Lethargy
  • Inappetence
  • Abdominal pain

The severity of symptoms depends on the quantity and frequency of acorn ingestion. If a dog has eaten a large number of acorns, then this is more likely to lead to toxicity. The size of the dog is also important. A small dog would need to eat a lot less than a large dog for toxicity to develop. Similarly, a dog that ingests acorns regularly is more likely to suffer more severe symptoms of acorn toxicity than a dog who may have eaten a small amount on one occasion.

It may not be immediately obvious that your dog has ingested acorns until you notice it in their vomit or within their faeces.

My dog ate an acorn, what should I do?

As soon as you realise your dog has eaten acorns it is important to contact your vet as soon as possible. Acorn toxicity should be treated promptly, as any delay in treatment can, in severe cases, lead to permanent harm. Do not try to make your dog sick, as it may not be necessary and in some circ*mstances can be harmful to your pet.

The treatment that your dog receives will depend on their condition. It is likely to involve symptomatic treatment such as controlling vomiting and diarrhoea and abdominal pain. Your vet may want to perform blood tests to assess your dog’s kidney and liver function. If your vet is suspicious of a gastrointestinal blockage your pet may require x-rays for further investigation and surgery to remove any blockages that are detected. Your vet will be able to assess your pet’s condition and discuss what treatment or tests may be needed.

Will my dog be OK?

If acorn ingestion is treated promptly then the prognosis for your best friend is favourable. About 75% of dogs will show symptoms of poisoning, but more severe signs are quite rare with prompt action. The outcome may be more unpredictable if ingestion of large numbers of acorns is not treated immediately. This increases the likelihood of more significant and permanent damage. Again, it’s important to contact your vet as soon as possible.

Prevention is always better than cure. Therefore it may be sensible to walk dogs on leads in areas where acorns cannot be avoided. Teaching dogs to ‘leave’ or ‘drop’ items from a young age can be an incredibly useful tool in preventing dogs from ingesting toxic items. It is also worth noting that toxicity can develop when dogs ingest oak leaves or drink water where leaves and acorns have been soaking; therefore, this behaviour should be discouraged if possible. From time to time, accidents do happen, so rest assured that your vet is always there for you and your dog when needed.

You may also be interested in reading our Autumn Hazards post, to find out about some of the other dangers this season. Share your experiences and questions in the comments below. If you’re worried about your pet, search for a local vet now on VetHelpDirect.

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Rachel Kenvyn BVSc (Distinction), PgC (SAS) GPCert (SAS) MRCVS

October 28, 2020 • 391 Shares0 Comments

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Are acorns poisonous to dogs? - Vet Help Direct (2024)

FAQs

Are acorns poisonous to dogs? - Vet Help Direct? ›

In direct answer to your question : Acorns are in fact potentially toxic to dogs but they usually have to eat quite large amounts before any serious signs will occur. Look for such symptoms as gastric upset, diarrhea, bloody diarrhea. Of course contact a vet ASAP if concerned.

How to treat acorn poisoning in dogs? ›

Your vet might need to give medication to help with vomiting, diarrhoea and pain, or, in more serious cases, rehydration and blood tests may be required. If your vet thinks the acorn might be causing a blockage in your dog's stomach, x-rays or surgery could be needed.

How many acorns does it take to make a dog sick? ›

One challenge is that there isn't a magic number for how many acorns it takes to make a dog sick. It depends on the size of the dog–plus, acorns have varying amounts of tannins in them. A perfect time to use the “leave it” skill is when you see your dog snuffling around acorns, so they learn they are not to be eaten.

Are acorns toxic to dogs in ASPCA? ›

Acorns are also commonly used in fall decorations and contain high concentration of tannins. Tannins can be irritating to a pet's digestive system, so vomiting, diarrhea and abdominal discomfort can develop with one-time exposures.

Can acorns give a dog diarrhea? ›

Acorns and oak leaves contain a combination of gallic acid and tannic acid which can be harmful to pets. If a dog has eaten an acorn, symptoms can include stomach discomfort, vomiting and diarrhea. More severe poisoning may occur in smaller dogs or dogs who have eaten a larger quantity of acorns.

How do you treat acorn poisoning? ›

There is no specific treatment for acorn poisoning and the care given to your horse will depend on the number of acorns eaten and the stage of illness. Intravenous fluids will help wash out the toxins and prevent further damage to the organs.

What are home remedies for poison oak on dogs? ›

The treatment for poison oak in your dog is essentially the same as it would be for you. First, wash your dog with a soap that will remove the oil to prevent further exposure. Dawn dish soap is a great soap to get poison oak oil off your dog. Make sure to rinse your dog well and do not get any soap in your dog's eyes.

Why do dogs like to eat acorns? ›

They can be a temptation for your dog, who may be sniffing around outside. Acorns can cover vast amounts of ground space during autumn and winter, providing us with that familiar autumnal scene. Dogs have an inquisitive nature and they love to explore the world through their nose and mouth.

How long can poisoning last in dogs? ›

Depending on the type of poisoning, dogs may take weeks or months to recuperate, and some dogs may have permanent organ damage after recovery.

Can acorns cause seizures in dogs? ›

Acorn Toxicity in Dogs

The other potential toxin is not actually from the acorn but the molds that may grow on acorns that have been sitting for a while. Many of these molds release what are called "tremorgenic mycotoxins" which can cause seizures, some of which may be fatal if severe enough.

What if my dog ate a small acorn? ›

“Otherwise, most dogs are fine if they eat an occasional acorn, as long as it's chewed prior to ingestion.” If the dog does end up swallowing the acorn, the pet should be monitored closely for any choking, vomiting, or low appetite afterward; Ray recommends seeking veterinary care if these or other issues occur.

Can dogs eat leached acorns? ›

They are also poisonous to horses, cattle and dogs. But by leaching acorns to remove the tannin, they can be made safe for human consumption.

Is oak wood poisonous to dogs? ›

Well, yes - all parts of the oak tree could cause all kinds of nasty symptoms of toxicity in your pooch. Also, you should never be tempted to throw a stick for a dog generally (toxic or not), as accidental 'stick injuries' can occur. So don't opt for an oak branch if you've left your fetch equipment at home!

Should I be worried if my dog ate an acorn? ›

When dogs eat them, they may suffer severe stomach upset, kidney failure, and sometimes even death. “If you think your dog has eaten acorns, it's best to call your veterinarian right away because delaying treatment can lead to permanent damage,” says Dr.

Is it bad my dog eats grass? ›

In conclusion, dogs may eat grass for various reasons, including to soothe an upset stomach or simply because they find it tasty. While eating grass is generally not harmful, it can cause vomiting and other digestive issues in some dogs.

Can dogs eat avocado? ›

Dogs can eat small portions of an avocado's mesocarp (inner area). Large portions can cause vomiting & diarrhea due to persin - a toxin in avocados. Persin is more prevalent in the leaves and skin of avocados and the seeds are choking hazards, so if your dog eats an entire avocado, contact your vet.

What are the symptoms of acorn poisoning? ›

The symptoms that may be seen include, but are not limited to:
  • Constipation.
  • Anorexia (not eating)
  • Pain in the abdomen (colic)
  • Blood in the urine.
  • Dehydration.
  • Edema or fluid accumulation in the legs.

Should I give my dog activated charcoal? ›

In summary, activated charcoal is a safe and effective treatment for dogs that have ingested toxins or poisons. It is important to talk to your veterinarian before giving activated charcoal to your dog, as they will be able to give you the correct dosage based on your dog's weight and the severity of their toxicity.

What kind of acorns are toxic to dogs? ›

A dog may also experience acorn poisoning (also called Quercus poisoning) by eating oak leaves. It's particularly dangerous for dogs to eat buds or oak leaves in the spring or green acorns in the autumn.

What causes acorn poisoning? ›

The full mechanism of acorn toxicity is unknown; however, the toxicity of oak leaves and acorns is suspected to be due to high concentrations of tannins, including the poisonous metabolites pyrogallol and gallic acid (6).

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