Dogwatch of Central Florida

Dangers of Dogs Eating Acorns

Ingested Oak Leaves, Buds, and Bark Can Cause Kidney Failure

May 22, 2009

Joy Butler

Acorns Can Make Dogs Sick - Wikimedia Commons

Many people are surprised to hear that those beautiful, shady oak trees in the backyard that everyone, including the dog, loves to stretch out under can be a potential danger for their dog.

According to the ASPCA website, as well as Dr. Jon Geller, veterinarian with dogchannel.com, acorns contain gallotannin which, depending on the amount eaten, can cause gastrointestinal upsets in pets and other animals, with symptoms such as cramps, vomiting, constipation, diarrhea, sometimes bloody diarrhea, and kidney failure. A few dogs may have seizures. Acorns swallowed whole have the potential to block the intestines, while chewed acorns release more toxin and the sharp pieces can irritate the gastrointestinal tract.

The hard outer shell of an acorn contains the most gallotannin while green acorns contain more gallotannin than brown acorns. Small amounts may cause only mild illness but in severe cases, dogs have died of  kidney failure from eating acorns. Dr. Geller even mentions that oak buds, bark, leaves, and drinking water that oak leaves have soaked in can cause illness in dogs.

Oak trees are the icon of strength and beauty and form a comfortable shade during hot summer but when leaves and acorns begin to fall, dog owners may be wise to keep an eye on the dog. Not all dogs will eat them but the little round objects can look an awful lot like a toy or something fun to play with. Dogs don’t always know what is and is not good for them. Teething puppies, especially, have a tendency to investigate and taste everything. Some dog owners report that symptoms can show up quickly after ingestion or be delayed for several days.

Outside drinking water should be kept in a place where leaves can not fall into it and should be cleaned and changed every day.

There is no antidote for animals poisoned by oak tree parts. Treatment is supportive such as intravenous fluids and medications for pain and gastrointestinal upsets.

Read on 

• Snake Bite Safety for Dogs on Camping Hikes
• 8 Dangerous Foods that Threaten Pet Health
• Can I Feed My Dog Onions, Grapes or Raisins?

There are other common plants that are toxic to dogs, as well as some garden supplies and antifreeze. Dog owners may also be interested in learning about  table foods and onion toxicity.

Dog owners who suspect their dog has been poisoned should call their veterinarian or the ASPCA emergency poison hotline at 1-888-426-4435, immediately. The call is free but a consultation fee may be charged to
your credit card. Be prepared to provide the animal’s breed, age, gender, weight, symptoms, suspected toxin, amount involved, and time lapsed.

And remember, the best treatment is always prevention.