Food safety
Can Dogs Eat Pistachios? Best Avoided — Here's Why
No, pistachios are best kept away from dogs. They are not on the list of truly toxic nuts like macadamias, so one or two dropped on the floor is rarely an emergency. But they are rich in fat, usually salted, and often shared still in the shell, which can choke a dog or block the gut. Old or damp nuts can also carry mold that makes dogs sick.
By Matt GarnettUpdated November 13, 20264 min read2 sources
Why pistachios are a poor choice for dogs
The main problem is fat. Pistachios are calorie-dense, and a dog that eats a big handful gets a sudden load of fat its gut is not used to. The AKC notes that rich, fatty foods like this are linked to pancreatitis, a painful inflammation of the pancreas that can need hospital care.
Most pistachios sold in the US are also roasted and salted, and many are flavored with garlic, onion powder, chili or sugar. Salt in quantity upsets the stomach and can unbalance a dog's electrolytes, and onion and garlic seasonings are harmful in their own right.
The warning: shells, mold and how much was eaten
Pistachio shells are hard and sharp-edged. A dog can choke on them, crack a tooth, or swallow enough to cause an obstruction in the stomach or intestines, which may need surgery. Dispose of shells in a closed trash can, not a bowl on the coffee table.
Nuts that are old or stored damp can grow molds that produce aflatoxin, which can cause vomiting, weakness, lethargy and liver damage. If your dog ate a large amount of pistachios, shells, or nuts that look moldy, call your vet or an emergency clinic promptly rather than waiting for signs.
If you like to share small snacks, a lick mat or a treat ball makes a little go further and slows a fast eater down.
If your dog ate some pistachios
First work out how many, whether they were shelled or in the shell, and whether they were salted or flavored. One or two plain nuts eaten by a medium or large dog usually cause nothing worse than mild stomach upset, and you can simply watch your dog for the rest of the day.
Do not try to make your dog vomit at home. Call your vet if a small dog ate more than a few, if shells were swallowed, if the nuts were garlic or onion flavored, or if your dog has had pancreatitis before. Your vet can tell you whether to come in.
How much is too much by dog weight
Because pistachios are not a recommended treat, there is no amount worth aiming for. As a rough guide to how worried to be, a dog under 20 lb that eats a small handful is at more risk of stomach trouble than a dog over 50 lb that eats the same amount.
For a dog of 20 to 50 lb, a few accidental nuts is unlikely to matter, while a whole bag is a call to the vet. Size matters most with shells, since a shell that passes through a Labrador can lodge in a Chihuahua or a young puppy.
Puppies and dogs at higher risk
Puppies explore with their mouths and will happily crunch shells off the floor, so they face the choking and blockage risk more than the fat risk. Keep bowls of nuts out of reach during parties and game days, when snacks end up at dog height.
Dogs that have had pancreatitis, overweight dogs, and breeds prone to pancreatitis such as Miniature Schnauzers should get no pistachios at all. Dogs with heart or kidney conditions on salt-restricted diets should also avoid salted nuts. Ask your vet if you are unsure where your dog fits.
Signs to watch, and what to give instead
After a pistachio raid, watch for vomiting, diarrhea, drooling, loss of appetite, a tense or painful belly, or a dog that hunches and seems restless. Signs of pancreatitis can take a day or more to show. Repeated vomiting, belly pain, straining without passing stool or lethargy all mean a vet visit the same day.
If you want a crunchy, nutty-tasting reward, a little plain, unsalted, xylitol-free peanut butter in a puzzle toy is a safer choice, used sparingly. Plain carrot coins or green beans give crunch without the fat.
This page is general information, not veterinary advice, and it cannot replace an examination by the vet who knows your pet.
Common questions
Are pistachios toxic to dogs?
Pistachios are not considered toxic the way macadamia nuts are. The concerns are their high fat and salt, the risk of choking on shells or a gut blockage, and mold toxins on old nuts. That is why they are best avoided.
Can dogs eat pistachio shells?
No. Shells are hard to digest and can choke a dog, chip a tooth or build up into a blockage. If your dog swallowed several shells, especially a small dog, call your vet for advice.
Can dogs eat pistachio ice cream?
It is better not to. Ice cream is high in sugar and fat, most dogs digest dairy poorly, and some frozen desserts contain xylitol or chocolate. A lick is unlikely to hurt, but a bowl can upset the stomach.
What nuts are toxic to dogs?
Macadamia nuts are toxic to dogs and can cause weakness, tremors and fever. Black walnuts and moldy nuts of any kind are also dangerous. Almonds, pecans and pistachios are not classed as toxic but are fatty and hard to digest.
My dog ate one pistachio. Should I worry?
A single plain pistachio rarely causes a problem in a healthy adult dog. Watch for vomiting or loose stool over the next day, and call your vet if a shell was swallowed by a small dog or signs appear.
Sources we checked
This guide is general information, not veterinary advice. If your pet is unwell or injured, contact your veterinarian.
