My dog ate a stone fruit pit — what do I do?
Cherry, peach, plum, apricot, and nectarine pits are dangerous to dogs in two ways at once: physical obstruction (a peach pit is the size of a chew toy, and shaped to lodge in the gut) AND chemical toxicity (the pit contains amygdalin, which releases cyanide when chewed or digested). Whole pits = obstruction emergency. Chewed pits = obstruction PLUS cyanide. Call your vet now.
EmergencyASPCA Animal Poison Control (US, 24/7): (888) 426-4435
Signs to watch for
- Choking, gagging, or pawing at the mouth (pit lodged in throat)
- Vomiting, especially if the pit was chewed
- Abdominal pain, hunched posture
- No stool for 24+ hours, returning vomiting (intestinal obstruction)
- Bright red gums (cyanide oxygen-saturation effect — counter-intuitive sign)
- Labored or rapid breathing (cyanide blocks oxygen use at the cellular level)
- Weakness, collapse, or seizures (severe cyanide toxicity)
- Drooling, excessive salivation
Timeline
Two toxins, two emergencies
The pits of cherries, peaches, plums, apricots, and nectarines (all members of the Prunus genus) contain amygdalin — a cyanogenic glycoside that releases hydrogen cyanide when the pit is crushed, chewed, or partially digested. Cyanide blocks cellular oxygen use, producing weakness, labored breathing, bright-red gums, and at high doses seizures and death.
The pit itself is the second hazard. A peach pit is around 3–4 cm wide and very hard — a near-perfect size to lodge in the esophagus of a small dog, the pylorus of a medium dog, or the small intestine of a large dog. Multiple veterinary case series cite stone-fruit pits as a recurring foreign-body obstruction.
Practical implication: whole-swallowed pits are primarily an obstruction emergency (cyanide release is slow and limited by intact seed coat). Chewed or crushed pits are primarily a cyanide emergency (rapid amygdalin breakdown) — plus the pit fragments can still obstruct. The vet triage differs based on which scenario applies.
Which pits matter, and how much?
Cherry pits are the most common ingestion scenario — small enough that dogs eat several at once, sometimes from fallen fruit under a backyard tree. Each cherry pit has roughly 1–3 mg of amygdalin; a dog eating 20+ chewed cherry pits in a sitting is hitting meaningful cyanide dose. Cherry pits are also small enough to mostly pass through the gut without obstruction.
Peach pits are the biggest practical worry — large (3–5 cm), shaped to lodge, and dogs that gnaw the flesh off often try to swallow the pit whole. A single swallowed peach pit is an obstruction emergency for any dog under 20 kg, and a chewed pit can release meaningful cyanide.
Plum, apricot, and nectarine pits sit in between — smaller than peach, larger than cherry. Same amygdalin content per pit roughly as peach. Apricot pits are particularly concerning because the seed inside (the 'kernel') is sometimes sold as a health food and has high amygdalin content; ingestion of multiple kernels can produce serious cyanide toxicity.
What to do right now
1. Call your vet or the ASPCA Animal Poison Control ((888) 426-4435, 24/7) immediately. Be specific about what was eaten: cherry pits (how many, chewed or whole), peach pit (one whole pit is enough to call about), apricot kernels (high amygdalin), plum or nectarine pits.
2. Note whether the pit was chewed or swallowed whole. Chewed pits = cyanide is the time-critical hazard. Whole pits = obstruction is the slower-developing but still serious hazard.
3. Do not induce vomiting at home for whole pits — a hard pit coming back up can lodge in the esophagus and turn a manageable problem into an acute choking emergency. For chewed pits, follow vet instructions only.
4. Watch for the bright-red-gums sign. It is counter-intuitive (cyanide poisoning causes red, not blue, gums because oxygen cannot offload from hemoglobin) but it is a classic emergency sign that warrants immediate vet attention.
5. Drive to the clinic. Both the cyanide window (first 2 hours) and the obstruction-removal window (endoscopic, first 2–4 hours) close fast.
Cherry pits versus peach pits — different triage
Cherry pit triage: usually the cyanide risk scales with number of chewed pits, and the obstruction risk is low (cherry pits are small enough to mostly pass). A dog that ate 2–3 cherry pits (chewed or whole) is usually a 'monitor at home' situation. A dog that ate 20+ chewed cherry pits, or any cherry pits while showing GI signs, is a vet call.
Peach pit triage: even one swallowed peach pit is usually an X-ray and 'where is it now' question. Pits in the stomach within 2–4 hours can sometimes be retrieved endoscopically. Pits past the pylorus often need surgery.
Apricot kernels (the seed inside the pit) deserve a separate mention — they are sometimes sold as a health-food product and have the highest amygdalin content of common stone-fruit seeds. Multiple kernel ingestion can be a primary cyanide emergency rather than an obstruction one.
What the vet will do
Initial: assessment of what was eaten (chewed vs whole, species, count), physical exam including gum color and breathing pattern, vital signs. Imaging (X-ray, sometimes ultrasound) to locate pits in the GI tract.
Cyanide-suspect cases: bloodwork including blood gas (looking for metabolic acidosis from cellular oxygen deprivation), and supportive care with oxygen therapy. The specific cyanide antidote (sodium thiosulfate, hydroxocobalamin) is rarely used in veterinary practice — most cases respond to oxygen support and time as the cyanide is metabolized.
Obstruction cases: endoscopic retrieval if the pit is still in the stomach and within 2–4 hours of ingestion. Past the pylorus, surgery (gastrotomy or enterotomy) is usually the only safe option. Watchful waiting is rarely chosen for stone-fruit pits because of the obstruction case-fatality if they lodge.
What not to do
- Do not induce vomiting at home for a swallowed whole pit — the pit on the way back up can lodge in the esophagus and cause acute choking.
- Do not assume a whole-swallowed pit 'will pass'. Many do, but the case-fatality of pits that lodge in the small intestine is high enough that imaging + intervention is preferred over watchful waiting.
- Do not feed stone fruit with pits as a treat. The flesh of cherries, peaches, plums, and apricots is safe in moderation; the pits are categorically not. Cut around the pit before sharing.
- Do not ignore bright-red gums — this is the cyanide-poisoning sign and warrants immediate vet attention regardless of how 'fine' your dog seems otherwise.
- Do not give apricot 'kernel' health-food products to dogs. They contain the highest amygdalin concentration of common Prunus seeds.
Frequently asked
Will my dog die from eating a peach pit?
It depends on size and where the pit lodges. Most dogs that get a peach pit to the vet within 2–4 hours (still in the stomach) recover after endoscopic retrieval. Pits that lodge in the intestine days later can require surgery, and case-fatality climbs if obstruction goes unrecognized. The cyanide piece is usually limited for whole pits because the seed coat is intact.
How many cherry pits is dangerous?
For a 10 kg dog: 1–2 chewed cherry pits is a "monitor at home" situation. 10+ chewed cherry pits is in cyanide-toxicity territory and a vet call. Smaller dogs hit threshold with fewer pits. Whole-swallowed cherry pits are usually not a cyanide issue but multiple together can be an obstruction concern.
My dog swallowed a peach pit whole — should I induce vomiting?
No — not at home, and usually not at the clinic either for whole pits. A hard pit coming back up the esophagus can lodge there and turn a manageable obstruction into an acute choking emergency. Imaging first, then endoscopic retrieval if the pit is still in the stomach.
What is the bright-red-gums sign?
Cyanide poisoning prevents cells from using oxygen, so oxygen stays bound to hemoglobin in the blood — making the gums look brighter red than normal rather than blue (the sign you might expect for 'oxygen problem'). It is counter-intuitive but it is the classic acute cyanide-poisoning sign and warrants immediate vet attention.
Is the flesh of stone fruit safe for dogs?
Yes — cherry, peach, plum, apricot, and nectarine flesh in moderation is safe and even beneficial as occasional treats. The dangerous parts are the pits (obstruction + amygdalin), the stems and leaves (some Prunus species), and the apricot kernels (high amygdalin). Cut around the pit before sharing.
How long does cyanide toxicity take to show?
For chewed pits, symptoms can appear within 15–30 minutes — labored breathing, bright-red gums, weakness. For whole pits, cyanide release is slow and limited by the intact seed coat, so cyanide signs are uncommon unless the pit fractures in the GI tract.
Primary sources
This guide draws on the following authorities. Specific clinical decisions for your pet should always be made with your vet.
Double-check another food, get a personalised follow-up, or talk to CRO about your pet’s specific situation.
This guide is educational and based on US veterinary sources (ASPCA APCC, AVMA, and peer-reviewed literature). It is not a substitute for a vet call. When in doubt, phone your vet or the ASPCA Animal Poison Control — the fee is far cheaper than a delayed case.