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My 25 kg dog ate about 10 pecans, some with shells — will the high fat cause vomiting or pancreatitis?

Dogs · Food safety

Last reviewed: 2026-09-05 · Reference ranges: ASPCA, Pet Poison Helpline & Merck Veterinary Manual

Short answer

Yes, that many pecans pose a significant risk due to their high fat content, which can trigger vomiting, diarrhea, or even pancreatitis in some dogs. The shells add a risk of intestinal irritation or blockage. Watch for signs like repeated vomiting, a painful or distended abdomen, lethargy, and loss of appetite over the next 48 hours. If you notice any of these, contact your vet promptly, as pancreatitis requires urgent medical treatment.

Pecans — Food safety facts

Feed with care · Dogs · full breakdown on the linked food page

Very fatty and prone to mould. Not toxic, but not a good treat either.

Dogs and cats carry the same rating (Feed with care), so the notes below hold for either pet.

Pecans is not poisonous to dogs, but it is easy to over-feed. Rich fat, salt or seasoning can bring on vomiting or diarrhoea within a day, and repeated large portions are a recognised trigger for pancreatitis.

If it ate some before you noticed, watch for vomiting, diarrhoea, loss of appetite, unusual tiredness or a painful, swollen abdomen over the next 24 hours. A one-off small amount in a healthy adult usually passes with water and rest; repeated exposure, a puppy or kitten, a senior, or a pet with an ongoing illness is a reason to call your vet the same day.

Why these cautions matter

Mouldy food can carry tremorgenic mycotoxins, which produce uncontrollable tremors and seizures rather than a simple stomach upset.

Rich, fatty food is the classic trigger for pancreatitis, a painful inflammation of the pancreas that usually needs veterinary treatment rather than rest alone.

Pecans can turn up now and then, but not as a daily habit: keep the rest of the day's food unchanged and watch the next walk and the stool that comes with it.

The full verdict, portion guidance and serving notes are collected on the Pecans food facts page.

Open the full food page: Pecans food facts →