Short answer: Cherries are toxic to dogs due to cyanogenic glycosides (amygdalin) in the pits, stems, and leaves per Plumb 2018 (Veterinary Drug Handbook). Chewing releases cyanide at gastric pH via beta-glucosidase enzymatic hydrolysis; cyanide LD50 in dogs is approximately 2 mg/kg body weight per Plumb 2018 — meaning even a small number of chewed pits can be acutely lethal for a small dog. Pits also pose GI obstruction risk per Hayward 2002 (J Am Anim Hosp Assoc). The cherry flesh alone is not chemically toxic, but the practical reality is that dogs eating cherries typically also chew pits, stems, or leaves. All Prunus genus stone fruits (cherries, plums, peaches, apricots, nectarines, almonds) carry the same cyanogenic risk. Treat any pit ingestion as a category-1 emergency. Symptoms: tachypnea, bright red mucous membranes, dilated pupils. Treatment: hydroxocobalamin antidote per Plumb 2018. Contact ASPCA Animal Poison Control (1-888-426-4435) immediately.

Why cherries are toxic to dogs

Per Plumb 2018 (Veterinary Drug Handbook) and Pet Poison Helpline general Prunus toxicity guidance, cherries belong to the Prunus genus — the same plant family as plums, peaches, apricots, nectarines, and bitter almonds. The shared toxic mechanism is cyanogenic glycosides, primarily amygdalin and (in some species) prunasin, concentrated in pits, stems, leaves, and bark. The flesh itself contains negligible amygdalin. When pits or stems are chewed or crushed (releasing the plant's beta-glucosidase enzyme) and contact gastric acidity, amygdalin is hydrolyzed in two enzymatic steps to release hydrogen cyanide. Cyanide binds cytochrome c oxidase in mitochondrial electron transport, blocking cellular oxygen utilization — the body has plenty of oxygen but cells cannot use it. This produces rapid-onset histotoxic hypoxia affecting brain and heart first.

Cyanide LD50 in dogs is approximately 2 mg/kg body weight per Plumb 2018. Amygdalin content varies by species: bitter almonds 4–9% amygdalin (highest), cherry pits 1.5–3%, peach pits 1.5–3%, plum pits 1–2%, apricot pits 4–5%. A single cherry pit from sweet cherries (lower amygdalin than tart) contains approximately 5–10 mg amygdalin which yields approximately 0.3–0.6 mg of releasable cyanide when chewed. A 20 lb dog (9 kg) has an LD50 cyanide dose of approximately 18 mg cyanide — equivalent to chewed-and-swallowed contents of approximately 30–60 cherry pits. A small dog could lethally ingest cyanide from 5–10 chewed cherry pits in extreme cases. Pit GI obstruction per Hayward 2002 is a parallel risk — cherry pits (~10–13 mm) can lodge in the small intestine of toy and small breeds requiring surgical removal.

How many cherries are dangerous for a dog

Per Plumb 2018, there is no safe dose of cherries with pits / stems / leaves for dogs. The flesh of pitted cherries is technically non-toxic but is rarely fed in isolation by mistake. Practical dose-based risk thresholds for chewed pits: a 20 lb (9 kg) dog reaches cyanide concern threshold at approximately 5–10 chewed sweet cherry pits, lethal-dose territory at 30–60 pits. A 50 lb (23 kg) dog reaches concern at 15–25 pits, lethal at 75–150. Tart cherries (Montmorency, Morello) have higher amygdalin than sweet (Bing, Rainier) per Plumb 2018; halve the threshold doses. Cherry stems and leaves contain high concentrations of amygdalin and prunasin — ingestion of leaves or stems from a cherry tree (sometimes happens with dogs exploring orchards or yards with cherry trees) is also concerning. Maraschino cherries are processed pitted but contain very high sugar load + sometimes artificial coloring; not toxic but not appropriate as treat.

GI obstruction from swallowed-whole pits: cherry pits are approximately 10–13 mm diameter and can lodge in the small intestine of toy and small breeds per Hayward 2002 (J Am Anim Hosp Assoc). A swallowed-whole pit may pass through a large dog but obstruct a small dog. Multiple pits in any size dog raise both cyanide concern (if any chewing occurred) and obstruction risk (multiple pits can aggregate or sequentially lodge). Cherry tree access is a notable yard-safety concern — dogs left in yards with cherry trees can eat fallen fruit + pits over the season. Cherry-flavored or cherry-containing products: cherry pie often contains pitted cherries (lower cyanide risk but high sugar load + cinnamon load), cherry yogurt (lactose + sugar; check for xylitol in sugar-free), cherry-flavored cough drops (often contain xylitol; treat as xylitol exposure per Dunayer 2004), and cherry liqueurs / brandies (alcohol toxicity per the existing can-dogs-eat-alcohol guidance).

Symptoms of cherry poisoning in dogs

Per Plumb 2018, cyanide poisoning produces rapid-onset signs within 15–60 minutes of pit ingestion (faster than amygdalin gastric-hydrolysis would predict because some cyanide is also released in the mouth during chewing): tachypnea (rapid breathing) — often the first sign, sometimes described as gasping or panting that doesn't match exertion level, bright red mucous membranes — the classic cyanide sign because oxygen cannot be extracted from hemoglobin; venous blood remains arterial-red, dilated pupils (mydriasis), vomiting, drooling, excitement progressing to weakness, ataxia and tremors, seizures, collapse, shock and bradycardia, and death within 1–4 hours of high-dose ingestion without treatment. GI obstruction signs from whole pits develop more slowly (12–48 hours): persistent vomiting, anorexia, abdominal pain, lethargy, dehydration. Both presentation patterns require emergency veterinary care.

What to do if your dog ate cherries

Treat any chewed-pit ingestion as a category-1 emergency. (1) Call ASPCA Animal Poison Control at 1-888-426-4435 or Pet Poison Helpline at 1-855-764-7661 for case-management guidance based on weight + estimated pit count + signs. (2) Do not delay transport waiting for symptoms — cyanide poisoning progresses fast and treatment is most effective when started before severe signs develop. (3) Do not induce vomiting at home without explicit APCC / Pet Poison Helpline guidance — whole pits can lodge in the esophagus on the way back up. (4) Transport immediately to nearest 24-hour emergency veterinary hospital. (5) Bring information on number of pits ingested + dog's weight + time of ingestion + any current symptoms.

Hospital treatment for confirmed or suspected cyanide poisoning per Plumb 2018: hydroxocobalamin (Cyanokit) — the primary antidote that binds cyanide directly; sodium thiosulfate — alternative / adjunctive antidote that provides sulfur substrate for endogenous cyanide-to-thiocyanate conversion via rhodanese enzyme; oxygen therapy — supplemental oxygen does not bypass the cytochrome blockade but supports tissue oxygenation; IV fluid therapy for shock support; anticonvulsants for seizures; cardiopulmonary support as needed. For whole-pit obstruction presentations: diagnostic imaging (radiographs may not show pits because they are not radiopaque; contrast study or endoscopy may be needed), endoscopic retrieval if pits are in the stomach within 2–4 hours of ingestion, or surgical removal via enterotomy. Prevention: never feed cherries with pits; pitted-cherry flesh in tiny amounts is technically safe but not worth the risk; secure cherry trees in yards; supervise at picnics and fruit-picking events.

Frequently asked questions

Are cherries toxic to dogs?

Yes — cherries are toxic to dogs due to cyanogenic glycosides (amygdalin) in pits, stems, and leaves per Plumb 2018 Veterinary Drug Handbook. Chewing releases cyanide at gastric pH via beta-glucosidase enzymatic hydrolysis. Cyanide LD50 in dogs is approximately 2 mg/kg body weight per Plumb 2018. A 20 lb dog reaches concern threshold at 5-10 chewed sweet cherry pits, lethal-dose territory at 30-60 pits. Tart cherries (Montmorency, Morello) have higher amygdalin than sweet (Bing, Rainier) — halve the thresholds. Pits also pose GI obstruction risk per Hayward JAAHA 2002. The flesh alone is technically non-toxic but the practical reality is that dogs eating cherries also chew pits. Treat any pit ingestion as emergency.

What if my dog only ate a few pitted cherries?

Pitted cherry flesh is technically non-toxic in small amounts — the chemical hazard is amygdalin in pits, stems, and leaves. If you are certain the cherries were properly pitted (e.g., commercial pitted cherries from a bowl) and only a small number were eaten, the risk is primarily caloric / sugar load (cherries are 12 g sugar per 100 g — relevant for diabetic dogs) and mild GI upset risk. Monitor for vomiting and diarrhea over 6-24 hours. If any pits, stems, or leaves may have been included, treat as a category-1 emergency and call ASPCA Animal Poison Control (1-888-426-4435) immediately. Cherry stems and leaves carry high amygdalin concentrations too — yard-grown cherries are higher-risk than pitted commercial cherries.

What are the symptoms of cyanide poisoning from cherry pits in dogs?

Per Plumb 2018, cyanide poisoning produces rapid-onset signs within 15-60 minutes of chewed-pit ingestion: tachypnea (rapid breathing, often the first sign), bright red mucous membranes (classic cyanide sign — oxygen cannot be extracted from hemoglobin so venous blood stays arterial-red), dilated pupils (mydriasis), vomiting, drooling, excitement progressing to weakness, ataxia and tremors, seizures, collapse, shock and bradycardia, and death within 1-4 hours of high-dose ingestion without treatment. Treatment per Plumb 2018 is hydroxocobalamin (Cyanokit) antidote + sodium thiosulfate + oxygen + supportive care. Whole-pit GI obstruction presents more slowly (12-48 hours) with persistent vomiting, anorexia, and abdominal pain.

For related context, see our Can Dogs Eat Plums? and Can Dogs Eat Grapes?. To check whether your dog’s food contains any of these ingredients, paste the ingredient list into the KibbleIQ analyzer. For methodology context, see our published methodology.