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Symptom Triage｜Digestive Tract: Vomiting and Abdominal Distension

獸醫百科編輯部2026-08-13About 4 min read

#獸醫百科 #症狀鑑別 #消化道 #急症 #水族 #動物照護

Seven scenarios of vomiting and abdominal distension, from a single vomit and repeated vomiting to gastric dilatation-volvulus in dogs, bloat in ruminants, ascites and a whole tank of fish gasping at the surface, each classed as mild, needing a veterinary visit, or an emergency. A rapidly swelling abdomen in a deep-chested large dog that cannot bring anything up is an emergency measured in minutes, so do not wait at home. Rabbits and guinea pigs cannot vomit physiologically, so drooling, a hunched posture and teeth grinding are themselves abnormal signals. Every cell lists what to record or do immediately at home, including whether to phone ahead to check the clinic can take the case.

Symptom Triage｜Digestive Tract: Vomiting and Abdominal Distension

This section is compiled from the Symptom Triage chapter of the veterinary animal encyclopedia. The same symptom calls for different handling in different species, and copying what is done for another species can be harmful — first confirm which animal you are dealing with.

Symptom (what the owner sees)	Species where it is common	Possible direction	What the owner can observe / record at home	Matching specialty
Vomiting (a single episode)	Most common in dogs and cats	Mostly mild (normal alertness and appetite, a single episode, no other signs)	What came up (food / foam / bile / streaks of blood), whether a foreign body is present, and how alertness and appetite are afterwards	Endocrinology＊ (some metabolic emergencies such as diabetic ketoacidosis and adrenal crisis first present as vomiting, and are the direction that most needs to be ruled out)
Repeated vomiting (several times a day or over several days)	Dogs and cats, reptiles and amphibians	Veterinary visit needed to emergency (vomiting even after drinking water, vomiting blood, or resisting abdominal palpation from pain puts it straight into the emergency class)	Frequency and interval of vomiting, whether even water comes back up, changes in weight and alertness	Pathology and Forensics＊ (chronic repeated vomiting usually needs a systematic work-up rather than a single specialty)
Rabbits, guinea pigs and similar animals that physiologically cannot vomit, yet show drooling, a hunched motionless posture and teeth grinding	Rabbits, guinea pigs, other rodents	Emergency (in these animals, looking "as if vomiting" is itself an abnormal signal and often points to gastrointestinal stasis or severe pain)	Time of the last feed and last defecation, whether the abdomen feels distended, whether the animal is curled up and still	Endocrinology＊ (the metabolic stasis mechanism is partly related; the digestive tract itself is not among the 8 specialties in the original teaching material)
Rapidly swelling abdomen + repeated retching with nothing coming up + drooling and restlessness	Deep-chested large dogs (gastric dilatation-volvulus, GDV)	Emergency (measured in minutes; deep-chested large dogs carry the highest risk)	Phone the clinic immediately to ask whether it can take the case, record when the swelling started, and do not wait and watch at home	Pathology and Forensics＊ (an acute anatomical cause of death; mechanical volvulus is not directly covered by the 8 specialties in the original teaching material)
One side of a ruminant's abdomen (the left) clearly swollen with breathing difficulty	Cattle, sheep (bloat)	Emergency (can be fatal within hours)	Record which side is swollen and how fast, and whether the forage was changed recently or large amounts of legume forage were eaten	Population Medicine (feed management and group prevention systems; the original teaching material explicitly lists "disease prevention systems for farms", an exact match)
Abdominal girth slowly increasing with weight gain, a non-fatty swelling	Dogs and cats (ascites, common with heart disease and liver disease), female dogs and cats (pregnancy or pyometra), snakes (egg retention)	Veterinary visit needed to emergency (in an unspayed bitch with increased drinking and urination plus dullness, think of pyometra first)	Whether palpation gives a fluid wave (a fluid feel), and whether other cardiac or digestive signs appear at the same time	Cardiology / Reproduction and Neonatal Medicine (depending on cause it falls under cardiac fluid accumulation or a reproductive tract problem, and the original teaching material lists both)
Several tank fish gasping at the surface at once, crowding the air outlet and breathing hard	Ornamental fish (aquarium)	Emergency (acute deterioration of water quality can kill large numbers within hours)	Test ammonia and nitrite immediately with water test reagents, and check that aeration and filtration are working	Population Medicine (aquaculture disease prevention systems; explicitly listed in the original teaching material, an exact match)

Limits of this content

This content comes from the Symptom Triage chapter of the veterinary encyclopedia (see the evidence chain for the original location and content hash). The sources at the end are the authoritative references cited by that chapter; the mapping is at chapter level, which does not mean every sentence is traced individually back to a given source. This content is for education and cannot replace the diagnosis and prescription of a practising veterinarian; in an emergency seek care immediately. This text has not been clinically reviewed by a named veterinarian.

FAQ

My dog's abdomen suddenly swelled up and he keeps retching without bringing anything up. What should I do?: Act immediately. This is the classic presentation of gastric dilatation-volvulus (GDV) in a deep-chested large dog and is an emergency measured in minutes. Phone the clinic right away to ask whether it can take the case, record when the swelling started, and do not wait and watch at home.; 犬の腹が急に膨らみ、吐こうとするのに何も出ません。どうすればよいですか。 — 直ちに動いてください。これは胸の深い大型犬の胃拡張・胃捻転（GDV）の典型的な現れ方で、分単位の急症です。すぐに病院へ電話して受け入れ可能かを確認し、膨らみ始めた時刻を記録してください。自宅で待って様子を見ないでください。; My dog's abdomen suddenly swelled up and he keeps retching without bringing anything up. What should I do? — Act immediately. This is the classic presentation of gastric dilatation-volvulus (GDV) in a deep-chested large dog and is an emergency measured in minutes. Phone the clinic right away to ask whether it can take the case, record when the swelling started, and do not wait and watch at home.
My rabbit looks as if it is vomiting. Has it just eaten something bad?: Rabbits, guinea pigs and similar animals physiologically cannot vomit, so drooling, a hunched motionless posture and teeth grinding are themselves abnormal signals; they often point to gastrointestinal stasis or severe pain and this is an emergency. Note the time of the last feed and last defecation, whether the abdomen feels distended and whether the animal is curled up and still, then seek care immediately.; ウサギが吐いているように見えます。食あたりでしょうか。 — ウサギやモルモットは生理的に嘔吐できないため、よだれ、背を丸めて動かない、歯ぎしりといった様子自体が異常の信号です。消化管うっ滞や強い痛みを示すことが多く、急症です。最後に食べた時刻と排便の時刻、腹部が張って触れるか、体を丸めて動かない姿勢かを記録し、直ちに受診してください。; My rabbit looks as if it is vomiting. Has it just eaten something bad? — Rabbits, guinea pigs and similar animals physiologically cannot vomit, so drooling, a hunched motionless posture and teeth grinding are themselves abnormal signals; they often point to gastrointestinal stasis or severe pain and this is an emergency. Note the time of the last feed and last defecation, whether the abdomen feels distended and whether the animal is curled up and still, then seek care immediately.
A whole tank of fish is gasping at the surface and crowding the air outlet. What comes first?: This is an emergency, because acute deterioration of water quality can kill large numbers within hours. Test ammonia and nitrite immediately with water test reagents, and check that aeration and filtration are working.; 水槽の魚が一斉に水面に浮き、エアレーションの出口に集まって激しく呼吸しています。まず何をしますか。 — これは急症で、水質の急性悪化は数時間で大量死を招きえます。直ちに水質試薬でアンモニアと亜硝酸塩を測定し、エアレーションと濾過が正常に動いているかを確認してください。; A whole tank of fish is gasping at the surface and crowding the air outlet. What comes first? — This is an emergency, because acute deterioration of water quality can kill large numbers within hours. Test ammonia and nitrite immediately with water test reagents, and check that aeration and filtration are working.

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獸醫百科編輯部・《Symptom Triage｜Digestive Tract: Vomiting and Abdominal Distension》・IDAEO 知識庫・2026-08-13・https://km.idaeo.ai/post/vet/vomiting-and-bloating

Updated 2026-08-14

更新 2026-08-14T04:47:48.988Z · server-rendered · four-language · IDAEO 知識庫