Key takeaways
- Breathing trouble, collapse, a swollen hard belly with unproductive retching, seizures and suspected poisoning are emergencies.
- When in doubt, call your vet or the emergency clinic — they can tell you how urgent it is.
- Know where your nearest 24-hour emergency hospital is before you need it.
- Don't give human medications — many are toxic to dogs.
Dogs often hide pain and illness until they're quite sick. Knowing the warning signs helps you act fast. This list is not complete — if you're worried, call your vet or an emergency animal hospital. It's always better to check.
Go to the vet or emergency clinic immediately if your dog:
- Has difficulty breathing, is gasping, or has blue, grey or very pale gums
- Has a swollen, hard belly and is retching without bringing anything up, restless or drooling (possible bloat/GDV — life-threatening within hours, especially in large, deep-chested breeds)
- Collapses, can't stand, or is suddenly very weak
- Has a seizure lasting more than 2–3 minutes, or several seizures in a row
- May have eaten something toxic (chocolate, grapes, xylitol, medications, rat poison, antifreeze) — see toxic foods
- Is bleeding heavily or bleeding that won't stop after 5 minutes of pressure
- Was hit by a car, fell from a height or had any major trauma — even if it looks fine
- Shows signs of heatstroke: heavy panting, drooling, bright red or pale gums, vomiting, wobbliness, collapse
- Is straining to urinate with little or nothing coming out (especially male dogs — a blockage is an emergency)
- Has repeated vomiting, or vomiting/diarrhea with blood, especially in puppies
- Shows sudden paralysis, wobbliness or can't use its back legs
- Has an eye injury, or an eye that suddenly looks cloudy, bulging or painful
- Has a snake bite, or sudden facial swelling or hives (allergic reaction)
- Has difficulty giving birth (straining for 30–60 minutes without a puppy)
- Shows extreme pain: crying out, hunched posture, won't move
Call your vet the same day if your dog:
- Hasn't eaten for 24 hours (sooner for puppies, toy breeds and diabetic dogs)
- Has vomiting or diarrhea lasting more than a day, or seems lethargic with it
- Is limping and won't bear weight
- Has a cough that's getting worse, or nasal discharge with lethargy
- Is drinking or urinating much more than usual
- Has a new lump that's growing quickly or is bleeding
- Is scratching or shaking the head constantly, or has a smelly ear
- Shows sudden behavior changes: hiding, aggression, confusion
Heatstroke: act fast
- Move your dog to shade or air conditioning.
- Cool with cool (not ice-cold) water over the body, especially the belly and armpits, and use a fan.
- Offer small amounts of water if your dog is alert.
- Go to the vet immediately, even if your dog seems to recover — internal damage can develop later.
See seasonal dog care.
Be prepared
- Save your vet's number and the nearest 24-hour emergency hospital in your phone.
- Save a pet poison hotline number (U.S.: ASPCA 888-426-4435; Pet Poison Helpline 855-764-7661).
- Keep a first aid kit.
- Know your dog's normal: eating habits, energy, gum color and breathing rate at rest (typically under about 30 breaths per minute while sleeping).
- Consider pet insurance or an emergency fund.
Transporting an injured dog safely
- Even gentle dogs may bite when in pain. A soft makeshift muzzle can help (not if the dog is vomiting or struggling to breathe).
- Support the back and neck. Use a board, blanket or large towel as a stretcher for large dogs.
- Call ahead so the clinic can prepare.
Important: This article is general educational information, not veterinary advice. Every dog is different — always talk to your veterinarian about your own dog's health, diet and treatment. In an emergency, contact your vet or nearest emergency animal hospital immediately.
