HYPOTHERMIA IN DOGS/CATS
WHAT THIS SYMPTOM USUALLY MEANS
Hypothermia means dangerously low body temperature, causing slowed metabolism, heart arrhythmias, reduced brain function, and potentially death. Cold exposure, trauma, shock, or severe illness can all lead to hypothermia.
MOST COMMON CAUSES
MILD OR SELF-LIMITING CAUSES (COMMON)
• Mild exposure to cold or wet weather
• Post-anesthesia cooling (usually managed by vets)
MEDICAL CAUSES THAT NEED DIAGNOSIS (MODERATE CONCERN)
• Shock from trauma or disease
• Severe diarrhea or dehydration
• Hypoglycemia
• Endocrine disorders (e.g., hypothyroidism)
• Old age with poor thermoregulation
EMERGENCY CAUSES (HIGH CONCERN)
• Being trapped outdoors in cold temperatures
• Near-drowning in cold water
• Severe metabolic or cardiac collapse
• Trauma or blood loss
• End-stage disease
RED FLAGS: WHEN THIS IS AN EMERGENCY
• Shivering followed by no shivering (very dangerous)
• Stiff muscles
• Slow heart rate
• Collapse or unresponsiveness
• Pale or blue gums
If you’re unsure, treat it as urgent.
AT-HOME CARE YOU CAN START NOW
• Move pet into warm, dry environment
• Wrap in warm blankets
• Use warm (not hot) water bottles wrapped in cloth
• Never use direct heat like heating pads or hot water
• Transport immediately
These steps do not replace a veterinary exam if symptoms continue or worsen.
WHAT A VETERINARIAN WILL CHECK
Temperature, blood sugar, organ function, ECG, warm IV fluids, active warming strategies, and treatment of underlying trauma or disease.
MOST LIKELY DIAGNOSES (BASED ON 40 YEARS OF CASES)
• Cold exposure
• Shock
• Hypoglycemia
• Severe illness
• Trauma
• Near-drowning
BREEDS OR AGES AT HIGHER RISK
• Small dogs and cats
• Seniors
• Thin or shaved pets
• Pets with endocrine disease
WHEN YOU SHOULD SCHEDULE A VETERINARY VISIT
• Immediate (NOW): Any moderate or severe hypothermia
EXPECTED RECOVERY TIME
• Mild cases: hours
• Moderate to severe: 24–72 hours with intensive care
HOW THIS SYMPTOM RELATES TO LONGEVITY
Hypothermia is often secondary to serious disease. Early diagnosis of underlying causes (heart, kidney, endocrine, or neurologic) improves long-term survival.
WHEN TO CONSIDER A LONGEVITY CONSULT
Recommended after stabilization for seniors or chronically ill pets who are prone to temperature instability.
FOR CANCER-RELATED CONCERNS
Hypothermia due to internal bleeding may be associated with splenic or liver tumors. Pet Cancer Navigator helps families navigate these events.
FAQ
Can hypothermia happen indoors?
Yes — especially in frail seniors.
Should I use a heating pad?
No — risk of burns is high.
Is shivering good or bad?
Good — it means the body is still trying to warm itself. Stopping shivering is dangerous.