Can Dogs Eat Acorns and Other Tree Nuts? – American Kennel Club (2024)

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Each fall, in different parts of the U.S., residents experience an abundance of acorns and other types of tree nuts falling to the ground. Every two to five years, mast years occur, meaning trees produce a larger-than-normal amount of fruit, seeds, or nuts. As a result, along with hickory nuts and walnuts, acorns will suddenly be available in huge amounts to squirrels, chipmunks, deer – and your dog.

My dog especially likes to search for the broken-up pieces of acorns left by hungry squirrels. However, acorns and other tree nuts are better left for the local wildlife to devour. They can be a choking hazard for dogs, cause intestinal blockages and gastrointestinal (GI) distress, and in some cases be very toxic.

Acorn Danger for Dogs

Acorns are nuts from oak trees. They contain compounds called tannins that are harmful to dogs. 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. Jerry Klein, Chief Veterinary Officer for the AKC.

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.

Symptoms can occur within a few hours of ingestion and may include:

  • Loss of appetite
  • Vomiting
  • Diarrhea
  • Abdominal pain
  • Dehydration
  • Shock

Treatment for Acorn Poisoning

If you think your dog ingested acorns, do not try to make them vomit. “Depending on how many acorns your dog ingested, the size of your dog, and the severity of his reaction, he may need IV fluid rehydration, an X-ray to determine if there’s a blockage, or surgery,” says Dr. Klein.

Your vet may prescribe medicationto control vomiting, diarrhea, and pain. The veterinarian may also collect blood samples to evaluate the dog’s kidney and liver function.

“Prevention is the best approach,” advises Dr. Klein. He suggests walking your dog on a leash during acorn season, avoiding areas with heavy ground covers of tree nuts, and teaching “leave it” or “drop it” commands to prevent your dog from eating harmful objects.

Other Tree Nuts to Avoid

The nuts that grow on trees offer differing levels of danger for your dog. Most nuts, especially those with a hard shell, are a choking hazard.

Once tree nuts fall to the ground, they may become moist and develop a type of mold that can be toxic to dogs, causing seizures and other neurological symptoms. Nuts also have a high fat content. They can be too rich for a dog’s diet, cause pancreatitis, and contribute to obesity.

Almonds: While a small amount may not be harmful, it doesn’t take very many almonds to cause GI distress. Many almonds are flavored with salt and other seasonings that are dangerous to dogs.

Cashews: Cashews are not toxic, but they are high in fat. Eating too many can lead to GI upset, pancreatitis, and obesity. If you give your dog a cashew, make sure the nuts are shelled and unsalted.

Hazelnuts: Although the nuts aren’t toxic, the shells of hazelnuts are extremely hard and can cause choking and blockages.

Macadamia Nuts: Never give your dog macadamia nuts. Consumption of macadamia nuts can lead to vomiting, ataxia (loss of muscle control), weakness, hyperthermia, and depression.

Pecans: Avoid giving pecans to your dog for many reasons. First, they have extremely hard shells, which can lead to choking and blockages.

These nuts also contain the compound juglone, which can cause severe digestive issues. Pecans may develop also aflatoxin, or toxins produced by particular types of mold. Aflatoxin poisoning can cause illness or even be fatal.

Can Dogs Eat Acorns and Other Tree Nuts? – American Kennel Club (2)

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Pine Nuts: In small amounts, pine nuts are safe for your dog to eat. They’re high in fat, so avoid feeding large amounts.

Pistachios: Pistachios may not be toxic, but even when shelled, they can be choking hazards. Also, if your dog eats too many, they may experience stomach issues.

Pistachios can develop dangerous mold. Eating pistachios may even cause an allergy-like reaction in dogs.

Walnuts: Walnuts aren’t naturally toxic to dogs, but it’s best to avoid feeding them to your pet altogether. Consuming too many might cause stomach issues. They present choking hazards and may grow dangerous mold. Black walnuts may also contain juglone.

In a Nutshell

Dr. Klein advises that although some types of nuts aren’t toxic to dogs, many are. All of them contain high levels of fat and calories. Nuts and their hard shells are choking hazards and can cause GI obstructions.

Leaving acorns to the squirrels and other tree nuts to humans is a good idea. There are plenty of other treats that are much better options for your dog.

Can Dogs Eat Acorns and Other Tree Nuts? – American Kennel Club (2024)

FAQs

Can Dogs Eat Acorns and Other Tree Nuts? – American Kennel Club? ›

Acorns are nuts from oak trees. They contain compounds called tannins that are harmful to dogs.

Is it OK if my dog eats acorns? ›

Acorns, like conkers, are poisonous to dogs if eaten. They can cause an upset tummy, and because they are hard and sometimes spikey, they can cause damage or a blockage in the stomach. In rare cases it has led to liver and kidney failure, so it's important to be aware of your surroundings when walking your dog.

Can dogs eat any tree nuts? ›

Maybe. There are some tree nuts that are safe for your dog in small amounts such as almonds, pine nuts, or coconuts. However, nuts may give your dog an upset stomach or put your dog at risk for an intestinal obstruction that can lead to serious digestive issues.

Are oak tree berries poisonous to dogs? ›

So oak tree berries can be toxic to our dogs causing severe gastrointestinal upset and sometimes even kidney and liver damage.

How many acorns can a dog safely eat? ›

If a dog eats small amounts consistently, say one acorn a day every day, over time the tannins can cause kidney and liver damage, Dr. Miosek says. Or, if a dog eats a larger number of acorns at once, they may take in enough tannins at once to get sick right away. Acorns' hard shells pose another danger, she adds.

Why is my dog obsessed with eating 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.

What seeds can dogs not eat? ›

Not all seeds are safe for dogs. Stick to seeds that are known to be safe, such as pumpkin seeds, sesame seeds, sunflower seeds, and flaxseeds. Avoid seeds like apple seeds, which contain cyanide, and avoid any seeds that are heavily seasoned or salted.

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 dogs eat watermelon? ›

Good news: Your pooch can eat watermelon. However, this does come with precautions, according to the American Kennel Club. First, the watermelon must be seedless or you should remove the seeds before giving it to your pet. The seeds could lead to an intestinal blockage, so be sure that you pick a seedless watermelon.

Is peanut butter good for dogs? ›

' The good news is that regular peanut butter is safe to give your dog as a treat. Just make sure to avoid peanut butter with Xylitol, a sugar substitute found in lower or sugar-free products. Xylitol is the only ingredient in peanut butter that's bad for dogs.

Can dogs have bananas? ›

Yes, dogs can eat bananas. In moderation, bananas are a great low-calorie treat for dogs. They're high in potassium, vitamins, biotin, fiber, and copper. They are low in cholesterol and sodium, but because of their high sugar content, bananas should be given as a treat, not part of your dog's main diet.

Which tree berries are poisonous to dogs? ›

Many berries (such as holly and yew) are extremely toxic to dogs if your pup tries to taste them. The pits of fruits such as apricots, cherries, and peaches often contain high concentrations of cyanide, which is why it's important dogs don't snack on them in your backyard.

What tree berries are bad for dogs? ›

Stay away from cherries, holly berries, juniper berries, baneberries, poke berries, and mistletoe berries. These contain pits and/or chemicals that can be health hazards for your dog. And remember to feed your dogs limited quantities because too much can be bad news!

What berry is toxic to dogs? ›

In addition, several parts of the cherry include chemicals which are toxic to dogs, including the stem and the leaves. Several other berries have similar risks related to pits and/or chemicals that are toxic to dogs, including holly berries, juniper berries, baneberries, poke berries and mistletoe berries.

Do acorns cause diarrhea in dogs? ›

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.

Are maple tree seeds toxic to dogs? ›

Maple seeds are not considered toxic, however they can cause gastrointestinal upset that would just need to be treated symptomatically. If a very large amount of them were ingested, there is a low risk for the seeds clumping up and obstructing the gastrointestinal tract.

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.

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