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Dogs | 🚨 Emergency red flags (the list that means go now)

獸醫百科編輯部2026-08-13About 8 min read

#獸醫百科 #犬 #急症 #中暑 #胃扭轉 #就醫判斷

Which situations mean putting the phone down and leaving immediately, and which ones must be dealt with today rather than tomorrow. The minute-level red flags include gastric dilatation-volvulus, labored breathing, heatstroke, seizures that will not stop, inability to pass urine, looking fine after trauma, sudden weakness and collapse, rapid facial swelling and proptosis of the eye. The hour-level ones include pyometra, dystocia, sudden hind limb weakness, suspected poisoning, gastrointestinal foreign bodies, bloody watery diarrhea in puppies, jaundice and petechiae, and fainting. Each entry states what it may be, why it is fatal, what to do before arriving at the clinic and what must not be done, and the last section is the phone list to stick on the fridge.

Dogs | 🚨 Emergency red flags (the list that means go now)

This content is compiled from the dog chapter of the veterinary animal encyclopedia. The same sign is handled differently in different species, and following advice written for another species can be harmful — confirm which animal you are dealing with first.

Basis in the teaching material: line 236 `• 真正专业的回答包括风险、限制、下一步检查，以及何时需要立即就医。`, line 151 `急症危险讯号`, line 230 "first distinguish the degree of urgency" — the original material gave the methodology and 0 list entries. Everything below is newly added.

General rule: phone the clinic first (confirm that they can take the case, can handle it, and what to bring) → transport the dog steadily → bring the pill box, packaging, photos and videos. Breathing problems and seizures should be recorded on video. Do not give medication, water or an emetic on your own.

8.1 Minute level (put the phone down and leave now)

Red flag	Possible disease	Why it is fatal	Do before arrival / Do NOT do
Distended abdomen plus retching that brings nothing up plus heavy drooling plus restlessness and pacing	Gastric dilatation-volvulus, GDV (large deep-chested dogs, just after a meal or after strenuous activity)	The twist cuts off blood flow, the stomach wall becomes necrotic, and shock follows; it progresses within minutes	Leave immediately and call the clinic on the way so they can prepare. Do not give water, do not press on the abdomen, do not try to "help the dog burp"
Labored breathing: open-mouth breathing with the neck extended, heavy abdominal effort, refusing to lie down, coughing up pink foam, purple or pale tongue and gums	Pulmonary edema (heart failure), pneumothorax and pleural effusion, upper airway obstruction (BOAS / laryngeal paralysis / foreign body), pneumonia, anaphylaxis	A few minutes of hypoxia causes irreversible damage	Keep the dog quiet and cool, minimize handling and stimulation, transport with ventilation. Do not force the mouth open to look, do not bathe the dog, do not press on the chest
Endless panting on a hot day or after exercise plus a high body temperature plus collapse plus vomiting or bloody stool plus seizures	Heatstroke (brachycephalic, obese, old, thick-coated and working dogs are at greatest risk)	Multi-organ failure and coagulation abnormalities; the cooling done on the way to the clinic decides survival	Move the dog into the shade, wet the whole body with room-temperature (not iced) water, use a fan or an open window for airflow, and go to the clinic immediately. Do not immerse in ice water, do not wrap the dog up in wet towels, do not wait for the temperature to look "normal" before leaving
Seizures that do not stop, or one after another within a short time	Status epilepticus or cluster seizures, intoxication, hypoglycemia, hepatic encephalopathy	Soaring body temperature and brain damage	Move hard objects away, time the event, record video, keep things cool and quiet, wrap the dog in a blanket for transport. Do not put your hand or any object in the mouth, do not force medication or water in
Repeatedly posturing but unable to pass urine, frequent small amounts or dripping blood, swollen painful abdomen	Urethral obstruction (stones, tumor, prostate), bladder rupture	High blood potassium causing cardiac arrest, and renal failure	Go to the clinic immediately. Do not press on the abdomen (the bladder may rupture), do not restrict water
After trauma (road accident, fall from a height, bitten by a large dog) even if the dog looks fine	Pneumothorax and pulmonary hemorrhage, diaphragmatic rupture, bladder rupture, internal bleeding, deep puncture wound infection	Signs often appear only hours later, and by the time they are obvious it is too late	Carry the dog on a board or blanket, minimizing movement; apply pressure to obvious bleeding points. Do not assume that "it can still walk, so it is fine"
Sudden weakness and collapse plus pale gums plus an enlarging abdomen	Ruptured splenic or hepatic hemangiosarcoma with internal bleeding (large breeds), other abdominal hemorrhage, pericardial effusion	Hemorrhagic shock	Keep the dog warm, transport smoothly, go to the clinic immediately
Rapid swelling of the face or muzzle plus hives plus vomiting plus weakness (often after an injection, medication, bee sting or snakebite)	Anaphylaxis, snake venom, multiple bee stings	Airway swelling and shock	Go to the clinic immediately and report what the dog was exposed to; for a snakebite note what the snake looked like (do not catch the snake, do not apply a tourniquet, do not cut and suck the wound)
The eyeball knocked out of the socket, or a sudden extremely painful red swollen eye with an abnormal pupil and loss of vision	Proptosis, acute glaucoma, corneal rupture	Vision is lost over a matter of hours	Keep the eye moist with clean damp gauze, avoid any pressure, go to the clinic immediately (an ophthalmology service is better). Do not try to push it back in yourself, do not put any household eye drops in

8.2 Hour level (today, do not wait until tomorrow)

Red flag	Possible disease	Notes
An intact female a few weeks after estrus that is dull, off her food, drinking and urinating more, with vaginal discharge, or with no discharge but a distended abdomen	Pyometra (the closed form is more dangerous and may have no discharge)	Sepsis and renal failure; emergency surgery is usually needed
During whelping: a long gap with no puppy after the water breaks, continued straining without progress, too long an interval between puppies, or a weak or feverish dam (the interval thresholds: the Merck Veterinary Manual page "Dystocia in Small Animals" lists when to seek care — "Interval between puppies or kittens is > 30 minutes with clear signs of myometrial contractions", "Interval between puppies or kittens is > 2 hours without signs of myometrial contractions", "Active labor for > 4 hours and no puppies or kittens produced", "Entire duration of whelping or queening lasting > 24 hours", ; individual variation is wide, so if any of the above occurs do not sit there timing it yourself — contact the veterinarian directly)	Dystocia	Two lives are at stake; ask in advance whether the clinic can do a caesarean at night
Sudden hind limb weakness, dragging, crying out in severe pain, or inability to stand	IVDD, fibrocartilaginous embolism, aortic thromboembolism, spinal fracture or tumor	Whether deep pain sensation is present determines the outcome, and the earlier surgery is done the better
Known or suspected ingestion of a toxin, human medication, plant or rodenticide (see §10)	Intoxication	Bring the packaging, note the time and the estimated amount, keep the vomit; inducing vomiting at home is not allowed (corrosive or oily substances, a dog already seizuring, brachycephalic dogs)
Repeated vomiting plus no defecation plus abdominal pain plus dullness; or thread visible in the mouth or anus	Gastrointestinal foreign body and obstruction, linear foreign body	If you can see the thread, it must not be pulled
Puppies: repeated vomiting, bloody watery diarrhea, refusing food and water, low body temperature, limpness	Canine parvovirus, CPV, hypoglycemia, intussusception	Puppies dehydrate extremely fast
Pale or yellow (jaundiced) gums, or petechiae; or nosebleeds and subcutaneous bruising	Anemia, hemolysis, hepatobiliary disease, coagulation abnormalities (including rodenticide poisoning), thrombocytopenia	Anticoagulant rodenticide poisoning can take several days before bleeding starts
Fainting from coughing, or fainting during exercise or excitement (syncope)	Heart disease (advancing MMVD, DCM, arrhythmia), tracheal collapse, pulmonary hypertension	Video is the key piece of information (it distinguishes fainting from a seizure)
Red eye, squinting, tearing, or rubbing the eye for more than half a day (especially brachycephalic dogs)	Corneal ulcer (which can deteriorate to perforation quickly in brachycephalic dogs), glaucoma, foreign body	Eye problems in brachycephalic dogs must not be put off
Low body temperature plus limpness plus reduced consciousness (especially in toy breed puppies)	Hypoglycemia, shock, hypothermia, sepsis	Keep the dog warm and go to the clinic immediately; do not force sugar water in (risk of aspiration) — phone and ask first

8.3 The "phone first" list (what should be stuck on the fridge at home)

Item	Content
Phone number and address of the primary clinic
Phone number and address of the 24-hour emergency hospital (plus the driving time)	Confirm this on an ordinary day, not on the day of the emergency
Whether they take large dogs / whether they have an oxygen cage / whether they can operate at night
Poison information contact	The local hotline 【Verification result: this item should not be given a fixed value — hotline numbers, whether they charge, and their availability all differ by country, so no specific number is listed here; look up the hotline announced by the local clinic or competent authority, 2026-07-30】
The dog's data card	Breed, body weight, age, neutered or not, every medication and supplement currently given, allergy history, past medical history, vaccination record, microchip number

Limits of this content

This content comes from the dog chapter of the veterinary encyclopedia (the original location and the content hash are in the evidence chain). The sources at the end are the authoritative material cited by that chapter, a chapter-level correspondence; it does not mean that every sentence traces back to a specific source. This material is for education and cannot replace diagnosis and prescription by a practicing veterinarian; for emergencies seek care immediately. This text has not been clinically reviewed by a named veterinarian.

FAQ

My dog has heatstroke — what can I do before we reach the clinic?: Move the dog into the shade, wet the whole body with room-temperature water (not iced water), use a fan or an open window for airflow, then go to the clinic immediately. Do not immerse the dog in ice water, do not wrap it up in wet towels, and do not wait for the temperature to look "normal" before leaving. Heatstroke causes multi-organ failure and coagulation abnormalities, and the cooling done on the way decides survival. Endless panting on a hot day or after exercise, a high temperature, collapse, vomiting or bloody stool, and seizures are all presentations of heatstroke.; 犬が熱中症になりました。受診の前に何ができますか？ — 日陰に移し、常温の水（氷水ではありません）で全身を濡らし、扇風機や窓を開けて風を当て、そのうえでただちに受診してください。氷水につけない、濡れタオルで包んでこもらせない、体温が「正常」になるのを待って出発しない、この3つは避けてください。熱中症は多臓器不全と凝固異常を起こし、搬送中の冷却が生死を分けます。暑い日や運動後にあえぎが止まらない、体温が高い、倒れる、嘔吐または血便、けいれんは、いずれも熱中症の現れ方です。; My dog has heatstroke — what can I do before we reach the clinic? — Move the dog into the shade, wet the whole body with room-temperature water (not iced water), use a fan or an open window for airflow, then go to the clinic immediately. Do not immerse the dog in ice water, do not wrap it up in wet towels, and do not wait for the temperature to look "normal" before leaving. Heatstroke causes multi-organ failure and coagulation abnormalities, and the cooling done on the way decides survival. Endless panting on a hot day or after exercise, a high temperature, collapse, vomiting or bloody stool, and seizures are all presentations of heatstroke.
My dog's abdomen is distended and it keeps retching without bringing anything up — what is going on?: This may be gastric dilatation-volvulus, which is common in large deep-chested dogs just after a meal or after strenuous activity, and the classic combination is a distended abdomen, retching that brings nothing up, heavy drooling, and restless pacing. The twist cuts off blood flow, the stomach wall becomes necrotic and shock follows, progressing within minutes. Leave immediately and call the clinic on the way so they can prepare; do not give water, do not press on the abdomen, and do not try to "help the dog burp".; 犬のお腹が張って、えずいているのに何も出てきません。どういう状態ですか？ — 胃拡張捻転の可能性があります。大型で胸の深い犬、食後すぐ、または激しい運動の後に多く、典型的な組み合わせは腹部の膨満、えずくが何も出ない、大量のよだれ、落ち着かず行ったり来たりすることです。捻転により血流が途絶え、胃壁が壊死し、ショックに至り、進行は分単位です。すぐ出発し、移動中に病院へ連絡して準備してもらってください。水を与えない、腹部を押さない、「ガスを抜いてやろう」としないでください。; My dog's abdomen is distended and it keeps retching without bringing anything up — what is going on? — This may be gastric dilatation-volvulus, which is common in large deep-chested dogs just after a meal or after strenuous activity, and the classic combination is a distended abdomen, retching that brings nothing up, heavy drooling, and restless pacing. The twist cuts off blood flow, the stomach wall becomes necrotic and shock follows, progressing within minutes. Leave immediately and call the clinic on the way so they can prepare; do not give water, do not press on the abdomen, and do not try to "help the dog burp".
My dog swallowed something it should not have — should I make it vomit first?: Do not induce vomiting at home based on what you read online. Phone the primary clinic, a 24-hour emergency hospital or a poison information contact first, and bring the original packaging, note the time and the estimated amount, and keep a sample of any vomit. With corrosive substances, oily substances, a dog that is already seizuring, and flat-faced dogs, inducing vomiting causes bigger problems. When you set off, take the packaging, the pill box, photos of the plant and the vomit with you.; 犬が食べてはいけない物を飲み込みました。先に吐かせたほうがよいですか？ — ネットで見た方法で自己判断で吐かせないでください。まずかかりつけ病院、24時間救急、または中毒相談の窓口に電話し、元のパッケージを持参し、時刻と推定量を記録し、吐いた物のサンプルを残してください。腐食性の物質、油性の物質、すでにけいれんしている場合、そして鼻の低い犬では、吐かせることでより大きな問題が起こります。出発するときは、パッケージ、薬箱、植物の写真、吐いた物を一緒に持って行ってください。; My dog swallowed something it should not have — should I make it vomit first? — Do not induce vomiting at home based on what you read online. Phone the primary clinic, a 24-hour emergency hospital or a poison information contact first, and bring the original packaging, note the time and the estimated amount, and keep a sample of any vomit. With corrosive substances, oily substances, a dog that is already seizuring, and flat-faced dogs, inducing vomiting causes bigger problems. When you set off, take the packaging, the pill box, photos of the plant and the vomit with you.

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獸醫百科編輯部・《Dogs | 🚨 Emergency red flags (the list that means go now)》・IDAEO 知識庫・2026-08-13・https://km.idaeo.ai/post/vet/dog-emergency-red-flags

Updated 2026-08-14

更新 2026-08-14T04:47:48.686Z · server-rendered · four-language · IDAEO 知識庫