What Is a Dog’s Normal Temperature?
A dog normal temperature is higher than that of a human’s normal body temperature. For humans, a temperature of 98.6°F (37°C) is considered normal, while for dogs, it is 100.0°F to 103.8°F (37.7°C to 39.8°C). According to the experts at the VCA, if your dog’s temperature rises above 104°F (40.0°C) or drops below 99°F (37.2°C), you must take them to the vet.
Please note that individual variations do exist when it comes to dog temperature. Some smaller dog breeds have higher body temperatures than larger breeds. A study has shown this strong inverse correlation between canine size and body temperature. The smaller the dog, the warmer their body.
As a responsible pet parent, knowing your dog’s typical temperature range is essential. A sudden rise or drop outside this range may signal a serious health issue. Recognizing these changes early can make all the difference in keeping your dog safe and healthy.
Other Signs of Abnormal Temperature
A dog’s body temperature alone doesn’t tell the full story. Whether your dog has a fever (hyperthermia) or a low body temperature (hypothermia), there are often other signs to watch for. Keep an eye out for the following symptoms:
Shivering or shaking – Dogs shiver when their body temperature drops, but also when they’re anxious, scared, or overly excited. If your dog is shivering without a clear reason, temperature changes could be the cause.
Lethargy – A noticeable drop in energy is common in dogs experiencing fever or hypothermia. They may seem unusually tired, sluggish, or uninterested in usual activities.
Loss of appetite – Dogs with a fever often refuse food or treats they would normally enjoy.
Shallow or rapid breathing – While a resting dog typically breathes 15–30 times per minute, dogs with temperature imbalances may exceed 35 breaths per minute, even while resting.
Panting – Panting is a dog’s natural way to regulate body temperature. Excessive or unexplained panting could point to a fever.
Warm ears and paws – When a dog’s temperature rises, you may notice their ears or paws feel unusually warm. While this can be a helpful clue, never rely on touch alone—only a rectal thermometer can confirm a fever accurately.
Vomiting or diarrhea – These symptoms often accompany viral infections or fevers and should not be ignored.
Respiratory issues – Coughing, wheezing, or a runny nose are common with fevers caused by infections.
Red or watery eyes – Some dogs develop eye redness or discharge when they're unwell.
In some cases, behavioral changes may be the earliest sign that something is off. A dog might become restless, withdrawn, or unusually clingy. While these subtle changes are worth noting, they aren’t enough on their own to confirm a fever. For an accurate diagnosis, always use a rectal thermometer and consult your veterinarian if your dog’s temperature falls outside the range of the normal temperature of dog.
Dog Temperature Ranges and What They Indicate
Understanding your dog’s temperature can help you catch potential health issues early. Here’s a breakdown of what different temperature readings mean, what they might indicate, and how to respond:
Temperature (℉) | Temperature (℃) | Classification | What It May Indicate | Recommended Action |
100–102 | 37.8–39.2 | Normal | Healthy dog temperature range | No action needed |
99–100 | 37.2–37.7 | Mildly Low | Resting state or cool environment | Monitor for other symptoms |
Below 99 | Below 37.2 | Hypothermia | Illness, shock, exposure to cold, senior or sick dog | Wrap in a blanket, use warm compresses, and contact your vet |
102.6–103.5 | 39.2–39.7 | Mildly Elevated | Stress, activity, or a warm environment | Let your dog rest, offer water, recheck temp in 15–20 mins, consult vet if symptoms persist |
103.6–104.4 | 39.8–40.2 | Fever | Infection, inflammation, or immune response | See your vet as soon as possible |
104.5–106 | 40.3–41.1 | High Fever / Hyperthermia | Emergency—risk of organ damage, heatstroke, especially in flat-nosed breeds | Begin gradual cooling (cool compresses), go to the emergency vet immediately |
Above 106 | Above 41.1 | Critical Hyperthermia | Life-threatening: may lead to seizures, organ failure, or death | Emergency—take your dog to the vet immediately |
How to Take a Dog’s Temperature
Taking your dog’s temperature may not be the most pleasant task, but it's an important skill for any responsible pet parent. According to experts at PetMD, here’s how to do it safely and accurately:
1. Gather Your Supplies
Use a digital rectal thermometer, as it provides the most accurate reading. Apply a small amount of petroleum jelly or water-based lubricant to the tip to make insertion easier and more comfortable for your dog.
2. Ask for Help
Most dogs dislike having their temperature taken—especially rectally. They may resist, squirm, or even snap out of fear or discomfort. Ask a trusted person to gently restrain your dog, ensuring they can’t turn around during the process. An experienced handler is ideal, especially for large or anxious dogs.
3. Keep Your Dog Calm
Talk to your dog in a calm, soothing voice before and during the process. Use treats, praise, or gentle petting to help them feel more relaxed—and to create positive associations for the future.
4. Take the Temperature
Lift your dog’s tail and gently insert the thermometer about 1 inch into the rectum. Hold it in place until it beeps. Then, carefully remove the thermometer and check the reading.
Different Methods to Measure Canine Temperature
Rectal Method And Why It is The Gold Standard
In dogs, even a one-degree variation in body temperature can significantly impact diagnosis and treatment. That’s why the rectal method is considered the most accurate and reliable way to measure a dog’s temperature—it reflects the core body temperature directly.
While alternative methods exist, such as ear (tympanic) or forehead (surface) thermometers, they are typically less precise. Their accuracy can be affected by factors like:
Ear infections
Wax buildup
Skin conditions
Thick fur
Dirt or debris
These interferences can lead to false highs or lows, making it harder to spot real health concerns. Though the rectal method may be less comfortable for your dog, it offers veterinarians and pet owners the most dependable data, especially when tracking fevers, hypothermia, or systemic illness.
Tips for Taking a Rectal Temperature
Use caution with insertion depth: Never insert the thermometer more than 1 inch into the rectum. If you feel any resistance, do not force it. Instead, gently rotate the thermometer using your wrist to ease it in.
Avoid contact with stool: If stool is present, don’t push through it. Doing so can interfere with the accuracy. Instead, guide the thermometer around the stool to ensure contact with the rectal wall for a more reliable reading.
Ear Method
While not as accurate as the rectal method, the ear (tympanic) method can be used in certain situations—especially when a rectal temperature reading is not feasible. However, it’s important to avoid this method if your dog has:
An ear infection
Excessive ear hair
Wax buildup
These conditions can interfere with the sensor and lead to inaccurate or inconsistent readings.
How to Measure Temperature Using the Ear Method
Use a clean, digital ear thermometer designed specifically for pets.
Have your dog sit or lie down on a comfortable, stable surface (e.g., a dog bed or examination table).
Ask a second person to gently hold your dog still, especially if your dog is anxious or tends to squirm.
Gently lift the ear flap and insert the thermometer into the ear canal, angling it slightly toward the eardrum (not straight in).
Hold the thermometer in place and wait for the beep or count 60 seconds, depending on the device.
Remove the thermometer and check the reading.
Note: Although this method is more convenient and less invasive, results can vary. If the temperature seems off or your dog shows signs of illness, consult your veterinarian for confirmation.
Armpit (Axillary) Method
The armpit method is less accurate than the rectal or ear methods and should be used only when other options are not possible. It can provide a rough estimate, but not a precise diagnostic reading.
How to Use the Armpit Method
Use a clean digital thermometer.
Have your dog stand or lie on their side in a calm and stable position.
Gently place the thermometer in your dog’s armpit—the area between the front leg and chest.
Hold the thermometer in place for at least 60 seconds. If needed, ask someone to help keep your dog still.
After removing the thermometer, check the reading.
To estimate the core body temperature, add approximately 1°F (0.5°C) to the result.
Important: If the adjusted temperature falls outside the normal range (100–102°F / 37.8–39.2°C), contact your veterinarian for further evaluation.
Methods to Avoid
Some temperature-taking methods are unsafe or unreliable for dogs and should be avoided:
Oral thermometers (designed for humans) are not suitable for dogs.
Dogs may bite the thermometer, risking injury or breakage.
Glass thermometers can shatter, causing internal damage or mercury exposure, which is highly toxic to pets.
Panting and movement make oral readings inaccurate.
The American Kennel Club (AKC) advises that mercury thermometers, if used at all, should only be inserted rectally, and with extreme caution.
For your dog’s safety and accurate results, always use pet-specific thermometers and methods: rectal, ear, or armpit (as a last resort).
Dog Thermometer Options
Thermometer Type | Pros | Cons | Notes |
Digital Rectal Thermometer | - Most accurate - Quick reading - Affordable | - Invasive and uncomfortable - Usually requires two people | - Lubricate before use - Disinfect before and after use - Insert only up to 1 inch - Label as pet-only |
Digital Ear Thermometer | - Easier to use - Less invasive and more comfortable than rectal - Quick readings | - Less accurate due to ear canal variability - Not suitable if wax buildup or ear infection present | - Use disposable sleeves if available - Do not use if the dog has an ear infection - Angle toward eardrum |
Mercury Glass Thermometer | - Can be reliable if used properly | - Fragile and breakable - Mercury is highly toxic if broken - Difficult to read | - Not recommended - Risk of mercury poisoning makes it unsafe for dogs |
Can You Use a Human Thermometer to Measure a Dog's Temperature?
Yes, you can use a human thermometer to check your dog’s temperature, but only for rectal use. It’s important to label the thermometer clearly as “pet use only” to prevent accidental use by humans, which could spread infections—especially if the thermometer is used orally, in the ear, or on broken skin.
For the most accurate tracking of your dog’s temperature over time, always use the same reliable thermometer each time to ensure consistent results.
What to Do If Your Dog’s Temperature Is Abnormal
If the reading on the thermometer is anything else than normal temperature for a dog, stay calm. Dogs can sense your stress, which may increase their anxiety. Here’s how to respond:
If the Temperature Is Too High (Fever)
A dog has a fever if their rectal temperature exceeds 103°F (39.4°C).
Let your dog rest in a quiet, cool, and well-ventilated area. If outdoors, move them to a shaded spot.
Offer plenty of water to keep them hydrated.
Use a gentle fan to circulate air around them.
Apply a cool, damp cloth to their ears or gently dip their paws in cool water if they tolerate it.
Do NOT give ice-cold baths, as sudden cold can constrict blood vessels and trap heat, worsening the fever.
Monitor their temperature every 15–20 minutes. If the fever rises or lasts longer than 24 hours, contact your veterinarian immediately.
If the Temperature Is Too Low (Hypothermia)
A temperature below 98°F (36.7°C) is dangerously low.
Bring your dog indoors immediately and place them near a heater vent or on a heating pad set to low.
Wrap them in warm blankets or use warm (not hot) compresses. You can also use warm water bottles wrapped in cloth placed near their belly—but never directly on their skin.
A hairdryer on low heat can be used cautiously at a safe distance; always test the heat on your own skin first.
Warm your dog gradually—avoid sudden temperature changes to prevent shock.
If their temperature continues to drop or does not improve, contact your veterinarian right away.
Key Reminder
In both cases, gradual warming or cooling is essential. Sudden temperature shifts can harm your dog’s system. Always monitor closely and seek veterinary care if you’re unsure.
Never Medicate Without Guidance
Never give your dog any medication for an abnormal temperature without consulting your veterinarian first. Medications such as Tylenol, paracetamol, or ibuprofen are highly toxic to dogs and can cause serious problems like liver damage, kidney failure, or even death.
Dogs metabolize medications differently than humans, so what works for you could be very harmful to them. Always contact your vet for proper diagnosis and treatment rather than guessing or self-medicating.
How to Tell If Your Dog Has a Fever
It’s important to avoid relying on methods like feeling your dog’s ears or nose to check for a fever, as these can be misleading. According to veterinarians, a dog’s temperature over 103°F (39.4°C) is considered a fever.
Common Signs of Fever in Dogs:
Warm ears and nose (though this alone isn’t a reliable indicator)
Lethargy or unusual tiredness
Loss of appetite
Shivering or trembling
Whimpering, whining, or signs of discomfort
Vomiting or diarrhea
Runny nose
Eye discharge or redness
Many infections and inflammatory conditions can cause these symptoms, so accurate temperature measurement is crucial. The most reliable way to confirm a fever is by taking your dog’s body temperature with a rectal thermometer for dogs.
When to See a Veterinarian
Seek veterinary care immediately if your dog shows any of the following red-flag symptoms:
Extreme lethargy or weakness
Persistent vomiting
Seizures or convulsions
Refusal to eat or drink
Temperature above 104°F (40°C) or below 98°F (36.7°C)
Prompt diagnosis and treatment are essential for a better outcome and faster recovery.
Conclusion
What should a dogs temperature be? A dog’s normal body temperature ranges from 101°F to 102.5°F (38.3°C to 39.2°C). The most accurate way to measure it is with a digital rectal thermometer for dogs. While dog temperature can be a helpful indicator, it is not always a clear sign of illness. If your dog displays unusual behavior or symptoms—even with a normal temperature—be sure to consult your veterinarian for a proper evaluation.
Frequently Asked Questions
Can dogs get fevers?
Yes, dogs can get fevers just like humans. A fever usually means their body is fighting an infection or illness.
How do dogs regulate their body temperature when it's hot outside?
Dogs cool down by panting. They also sweat a little through their paw pads and may seek shade or drink water to stay cool.
Do dogs get hot faster than humans?
Yes, dogs get hot faster than humans. They have a higher body temperature than humans, fewer sweat glands, and rely mostly on panting to cool down. This makes them more susceptible to heatstroke.
Reference List
https://vcahospitals.com/know-your-pet/taking-your-pets-temperature
https://www.petmd.com/dog/general-health/how-to-take-dogs-temperature
https://www.akc.org/expert-advice/health/how-to-take-your-dog-s-temperature/
https://vcahospitals.com/know-your-pet/taking-your-pets-temperature
https://www.dialavet.com/vet-answers/human-digital-thermometer-dog-temperature-265811
