Summer brings sunshine, playtime, and long days outdoors — but for puppies, the rising temperatures can be dangerous. Heat stroke is a life-threatening emergency that can escalate quickly, especially in very young, orphaned, or medically fragile puppies. Understanding the risks and knowing how to prevent overheating can make all the difference.
Why Puppies Are at High Risk for Heat Stroke
Immature Temperature Regulation
Young puppies, particularly those under eight weeks, are unable to regulate their body temperature effectively. Their bodies warm up rapidly and struggle to cool down, especially in humid or poorly ventilated spaces.
Breed and Health Factors
Short-nosed breeds like Bulldogs and Pugs are more susceptible to heat exhaustion due to restricted airways. Puppies with cleft palates, recovering from illness, or born prematurely may also overheat faster than healthy adults.
What Is Heat Stroke in Puppies?
Heat stroke occurs when a puppy’s internal body temperature climbs dangerously high — typically over 105°F — and the body can no longer regulate it. This condition can cause organ damage, seizures, and even death if not addressed immediately.
Signs of Heat Stroke in Puppies
Look for these red flags, especially during hot weather or after exposure to heat:
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Heavy or rapid panting
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Excessive drooling
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Lethargy or weakness
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Vomiting or diarrhea
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Bright red or pale gums
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Uncoordinated movement or collapse
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Glazed eyes or unresponsiveness
In neonates, the signs may be subtle:
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Refusing to nurse
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Crying or restlessness
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Panting without exertion
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Hot to the touch
8 Ways to Prevent Heat Stroke in Puppies
1. Avoid Midday Heat
Take puppies outdoors only during the early morning or evening. Midday heat can raise pavement temperatures to dangerous levels and quickly overheat even healthy older puppies.
2. Never Leave Puppies in Vehicles
Temperatures inside a car can skyrocket within minutes — even with the windows cracked. Never leave a puppy in a parked vehicle, even for a short time.
3. Keep Indoor Spaces Cool
Use fans, AC, or proper ventilation to maintain safe indoor temps. Avoid placing puppy pens or incubators near windows, direct sunlight, or heating vents.
4. Provide Shade and Hydration
Always offer access to fresh water and shaded areas, especially during outdoor events. For puppies too young to drink, monitor for signs of dehydration and overheating closely.
5. Use Cooling Tools
Cooling mats, damp cloths, or frozen water bottles wrapped in towels can be placed near enclosures or crates to help lower ambient temps.
6. Limit Activity
Young puppies may overexert themselves during play. Allow short play bursts followed by ample rest in a cool, shaded space.
7. Monitor Transport Conditions
When puppies must travel, ensure they’re in a well-ventilated vehicle with temperature control. Keep trips brief and avoid long stops.
8. Consider Breed Risk
Flat-faced breeds or medically compromised puppies need extra precautions, even in moderate heat. Avoid any exposure to hot environments.
Emergency Action: What to Do If a Puppy Overheats
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Move to a cool space immediately.
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Wet the puppy with lukewarm water (not cold), especially around the paws, belly, and underarms.
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Place a fan nearby.
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Offer small sips of water if the puppy is alert.
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Contact a veterinarian or emergency clinic right away. Even if the puppy seems to recover, heat stroke can cause internal damage that needs evaluation.
More Summer Dangers: Don’t Forget Fly Strike
Heat isn’t the only summer hazard. If you care for neonatal or disabled puppies, be aware of fly strike — a condition where flies lay eggs on the puppy’s skin, leading to maggot infestation. This often occurs in outdoor or unsanitary conditions and can be fatal if not treated quickly.
👉 Read our full guide to fly strike in puppies here
Keep Puppies Safe This Summer
Puppies are more vulnerable than we often realize — and heat stroke is both fast-moving and preventable. By staying alert, keeping environments cool, and acting quickly at the first sign of distress, you can protect lives.
Help us continue saving fragile lives this summer:
💙 Donate to support our urgent rescue efforts
🏡 Learn how to foster and give a puppy a second chance
Your support means the world to these puppies — and it saves lives every day.
Stay cool, stay prepared — and give those pups a shady spot and a snuggle. ☀️🐾