Collapse or Seizure
Researched & Compiled by the PetAuthority Editorial Team
Clinical Data Sources: ASPCA Animal Poison Control Center & Merck Veterinary Manual
These pages describe clinical possibilities and a Green, Yellow, or Red triage path. They do not diagnose an individual animal or replace an examination by a licensed veterinarian. Read the editorial standards.
- Code Green · Monitor
- Code Yellow · Urgent, 12–24 hours
- Code Red · Emergency, within 60 minutes
Call a poison hotline while you travel
Tap the number for the country you are in. Have the product name and your pet's weight ready.
What does collapse or seizure mean?
Collapse or a seizure is a Code Red emergency, and the dog needs a clinic within 60 minutes. Keep hands away from the mouth, time the episode, and do not give human medicine. One short seizure still needs an exam the same day.
A dog who falls over, paddles, or cannot be woken needs an emergency clinic now. Keep hands away from the mouth during a seizure and time how long it lasts. This is a triage guide, not a diagnosis for the animal in front of you.
What are common causes?
- Epilepsy or a first-time seizure disorder
- Low blood sugar, toxin, or heatstroke
- Heart rhythm problems or internal bleeding
- Brain disease or severe pain
What should I check at home?
Use this checklist once, then stop if handling increases distress or breathing worsens. Breathing rate, gum color, and appetite are the checks that change the plan, and a missed meal is more urgent in a bird or rabbit than the same gap in a dog. Write down what you see, including when the sign started, before you call.
- Move furniture away and dim noise. Do not restrain the body.
- Time the episode and film it if you can do that safely.
- When they are awake, check gum color and breathing rate.
- Look for toxin packaging, heat exposure, or a bloated belly.
When is this an emergency?
- This list is the emergency. Leave for a clinic after the first seizure or collapse.
- A seizure lasts more than a couple of minutes or they have more than one.
- They stay unconscious, have pale or blue gums, or cannot walk afterward.
- The episode follows chocolate, xylitol, a fight, or heat.