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Entry 247Filed under Breeding

Normal Temperature, Heart, and Respiratory Rates in Dogs

For most calm adult dogs, a useful starting point is 100–102.5°F, 70–120 heartbeats per minute, and 15–30 breaths per minute while asleep or resting. Learn how to measure safely, interpret your dog’s baseline, and recognize signs that need urgent veterinary care.
15-minute read By Animalso Team
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For most calm adult dogs, a useful starting point is a rectal temperature of 100–102.5°F (37.7–39.2°C), a resting heart rate of roughly 70–120 beats per minute, and a calm or sleeping respiratory rate of about 15–30 breaths per minute. These are reference ranges, not diagnostic limits: your dog’s baseline, age, size, measurement method, and symptoms matter.

Labored breathing, abnormal gum color, collapse, severe weakness, or suspected heatstroke calls for urgent veterinary care even if a number seems normal. Do not delay care to get a perfect measurement.

Quick reference: normal dog vital signs

Veterinary teams often record TPR: temperature, pulse, and respiration. This table is for calm, generally healthy adult dogs—not newborn puppies, dogs just after exercise, or dogs in distress.

Vital sign Practical adult-dog reference How to measure When to be concerned
Temperature About 100–102.5°F (37.7–39.2°C); rectal readings are the usual comparison. Use a digital thermometer carefully, preferably rectally. Persistent readings above about 103°F merit veterinary advice. Above 104°F or below 99°F is an emergency-level concern, especially with illness or weakness.
Heart rate Broadly about 70–120 beats per minute; puppies and smaller dogs often run faster than large adult dogs. Count chest beats or the femoral pulse while the dog is calm. An irregular or weak pulse, collapse, abnormal gums, or breathing difficulty matters more than a number alone.
Respiratory rate About 15–30 breaths per minute while calm or asleep. Count complete chest movements when the dog is not panting. A sustained sleeping/resting rate above the dog’s baseline or around 30 or more merits a veterinary call. Above 40 with effort is concerning; around 60 or more, blue gums, or collapse warrants emergency care.

Published ranges vary by source and circumstances. See the Merck Veterinary Manual and American Red Cross references. Their figures may describe different ages, measurement methods, or conditions.

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What does “resting” mean?

Take a resting measurement after your dog has been indoors and calm for several minutes—not just after exercise, play, barking, eating, overheating, or fright. For respiratory-rate monitoring, sleeping or quietly settled is usually best; do not count while the dog is dreaming, whining, or panting.

Activity, excitement, pain, fear, heat, and restraint can raise heart and breathing rates. Clinic readings may also be higher than home readings. Repeated measurements under similar conditions are often more useful than one number taken during an unusual event.

A 2025 home-monitoring study of 703 apparently healthy adult dogs found lower nighttime than daytime medians: heart rate was 58.3 beats per minute at night versus 61.3 during the day, and respiratory rate was 14.2 versus 17.4 breaths per minute. These are study medians, not universal limits. Read the study.

Normal temperature in dogs

Usual range and interpretation

Most owner-facing veterinary references put a dog’s usual temperature at approximately 100–102.5°F (37.7–39.2°C). Merck lists an average of about 101–102.5°F (38.3–39.2°C); the American Red Cross lists about 99.5–102.5°F (37.5–39.17°C).

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A 2024 analysis of 24,013 temperature records from 9,782 adult dogs seen at a university clinic reported a mean rectal temperature of 101.5°F (38.6°C) and an indirect reference interval of 99.9–103.1°F (37.7–39.5°C). This was a statistical interval from mixed clinical records, not a controlled study of healthy dogs measured at home. A clinic reading near 103°F is not automatically proof of dangerous fever, but persistent elevation or illness still needs veterinary interpretation. See the 2024 temperature study.

Fever is not the same as overheating

Fever is a regulated rise in the body’s temperature set point and can occur with infection, inflammation, immune-mediated disease, or cancer. Hyperthermia is an uncontrolled rise caused by heat exposure, strenuous exercise, heatstroke, seizures, or other conditions. Both can produce a high reading, but heatstroke is an emergency, not an ordinary fever to watch at home. Merck notes that true canine fevers are commonly in the 103–106°F range; severe heatstroke and other hyperthermic conditions can reach 106°F or higher. Learn more about fever and hyperthermia.

Temperature guideposts

  • 100–102.5°F: commonly accepted adult-dog range, assuming a reliable method.
  • 102.5–103°F: mildly above many conventional ranges. Let the dog rest and repeat if it is safe.
  • Persistently above about 103°F: contact your veterinarian, especially if the dog is lethargic, painful, vomiting, coughing, not eating, or otherwise unwell.
  • Above 104°F: urgent or emergency concern, particularly after heat exposure or with weakness, confusion, vomiting, abnormal gums, or collapse.
  • Below 99°F: urgent concern. Recheck technique, but do not delay care if the dog is weak, cold, collapsed, or unwell.

VCA considers a temperature above 104°F or below 99°F an emergency-level reading. Interpret thresholds alongside the dog’s condition.

Normal heart rate in dogs

How fast should a dog’s heart beat?

A broad veterinary reference for resting dogs is about 70–120 beats per minute. Smaller dogs often tend to have faster rates than larger dogs, but size is not a dependable diagnostic rule. One owner-facing chart from the Animal Medical Center gives these approximate bands:

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  • Small dogs: 90–120 beats per minute
  • Medium dogs: 70–110 beats per minute
  • Large dogs: 60–90 beats per minute

A UC Davis emergency chart gives broader, overlapping bands: approximately 100–160 for small dogs, 60–100 for medium dogs, and 120–160 for puppies. These charts describe different reference conventions, not diagnostic cutoffs. See the Animal Medical Center guide and UC Davis chart.

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Why heart-rate ranges vary

Values differ depending on whether they describe awake or sleeping dogs, clinic or emergency patients, puppies or adults, and palpation, a stethoscope, ECG, or wearable readings. Age, size, fitness, sleep, fear, pain, temperature, medication, and illness can also affect rate.

A 2010 24-hour ambulatory ECG study of 60 apparently healthy dogs weighing 2–80 kg reported a median minimum heart rate of 42 beats per minute, median average of 73, and median maximum of 190. It found no correlation between heart rate and body weight. View the ECG study.

A 2025 wearable-monitoring study found a modest size effect: adult dogs over 20 kg had a median resting heart rate of 59.5, compared with 62.1 in dogs 20 kg or less and 65.0 in dogs 10 kg or less. The values overlapped. Your dog’s established baseline is usually more useful than a size chart.

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Age matters, especially in puppies

The same 2025 study reported median heart rates of 78.5 beats per minute in puppies up to 12 months, 59.1 in adults, and 68.7 in dogs aged 10 years or older. These wearable-study medians are not replacement reference intervals. Newborn puppies have different temperature and heart-rate expectations and can deteriorate quickly; do not assess a neonate with an adult chart.

Heart rate versus pulse rate

Heart rate is the number of heartbeats per minute; pulse rate is the number of arterial pulses you can feel. They normally match but may differ when a heartbeat is too weak to create a palpable pulse. Note whether the pulse is regular and strong. Merck advises that an irregular pulse may indicate an arrhythmia and a weak or absent pulse can reflect serious problems. See Merck’s triage parameters.

Normal respiratory rate in dogs

How many breaths per minute is normal?

Published references include ranges such as 10–30 or 18–34 breaths per minute. VCA gives approximately 15–30 for a calm or sleeping dog. For home monitoring, 15–30 while asleep or quietly resting is a useful starting point. A consistent increase above an individual dog’s baseline can matter more than a single borderline count.

Why sleeping respiratory rate is useful

In a prospective study of 114 apparently healthy adult dogs, owners recorded 12–14 one-minute sleeping respiratory rates per dog over one week to two months. The mean within-dog average was 13 breaths per minute; no dog had a mean above 23, although three dogs had an individual measurement above 30. Awake resting rates were higher on average. Read the study.

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Veterinarians may ask owners of dogs with heart disease to record sleeping rates. VCA says daily monitoring may be recommended for dogs with heart failure; follow your veterinarian’s instructions on frequency and escalation. Do not change medication based only on a home reading.

Respiratory-rate guideposts

  • 15–30 asleep or calmly resting: commonly seen in comfortable dogs.
  • Consistently above 30 while asleep or resting: repeat the count and contact your veterinarian if the increase persists or is new.
  • Above 40 at rest: concerning, particularly with coughing, weakness, restlessness, inability to settle, or visible effort.
  • About 60 or more at rest: immediate emergency concern, especially if sustained.

These are guideposts, not absolute diagnostic boundaries. A dog breathing at 35 with obvious effort may be in greater danger than a comfortable dog briefly recorded at 42 after stress. AAHA emphasizes breathing effort, posture, gum color, comfort, and collapse alongside the rate.

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Breathing is not the same as panting

Count one breath when the chest moves in and out once. Do not apply a sleeping respiratory-rate threshold while the dog is actively panting. Panting is rapid, shallow open-mouth breathing, often with the tongue extended; it can be normal after exercise, excitement, stress, or heat. Unexplained or prolonged panting in a cool, calm environment—or panting with weakness, confusion, abnormal gums, vomiting, collapse, or effort—needs attention.

How to measure your dog’s vital signs at home

1. Taking a dog’s temperature

A rectal temperature is the usual practical home comparison for core temperature in an adult dog that can be handled safely.

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  1. Use a digital thermometer reserved for the dog.
  2. Have another person calmly support the dog if possible.
  3. Apply water-based lubricant or petroleum jelly to the tip.
  4. Position the dog safely, often on its side, and gently lift the tail.
  5. Insert the thermometer carefully. Never force it.
  6. Wait for the reading and remove it gently.
  7. Clean and disinfect it according to the product instructions.
  8. Record the reading, time, method, and recent exercise, panting, or fright.

Stop if the dog struggles, becomes distressed, or could bite. A measurement is not worth an injury. VCA’s temperature guide recommends professional measurement when home handling is unsafe.

Other thermometer methods

An ear thermometer may be useful when positioned correctly, but ear shape, hair, wax, placement, or infection can affect accuracy or comfort. Ear readings are not automatically interchangeable with rectal readings. Touching the nose, ears, paws, or groin cannot reliably measure core temperature; oral measurement is unsafe. Armpit readings may be rough screening information but should not be assumed to equal rectal readings.

Noncontact forehead infrared thermometers are not a dependable general substitute for rectal measurement. A multicenter study found poor agreement between noncontact infrared and rectal readings in dogs and cats. See the study.

2. Measuring heart rate or pulse

Measure when the dog is calm. If the rhythm seems irregular, count for a full 60 seconds.

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  1. Chest method: place your hand over the left side of the chest near where the elbow meets the rib cage. Count beats for 30 seconds and multiply by two, or count for a full minute.
  2. Femoral-pulse method: place two fingertips—not your thumb—on the inside of the upper hind leg. Count pulses for 30 seconds and multiply by two, or count for a full minute.
  3. Record the rate and whether the rhythm feels regular and the pulse strong. If possible, compare the pulse with the heartbeat; report a mismatch to your veterinarian.

These methods are described by the Animal Medical Center. A weak, absent, or irregular pulse is more significant than a mildly unusual rate in an otherwise comfortable dog.

3. Measuring respiratory rate

  1. Wait until the dog is asleep or resting quietly indoors.
  2. Watch the chest or abdomen, not panting movements.
  3. Count one rise and one fall as one complete breath.
  4. Count for 30 seconds and multiply by two, or count for a full minute.
  5. Do not count immediately after exercise, excitement, sniffing, whining, dreaming movements, or active panting.
  6. Repeat an unexpectedly high count once the dog is settled, unless emergency signs mean you should leave immediately.
  7. Record the number and whether breathing is effortless or labored.

VCA recommends keeping a written record, particularly when monitoring heart or lung disease.

Build your dog’s personal baseline

Take several readings when your dog is healthy, at similar times over multiple days, using the same equipment and technique. Note whether the dog was asleep or awake and record circumstances that could affect the result. Share the log with your veterinarian; a small persistent change may matter more than one value just outside a generic chart.

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Date and time Sleep or awake Temperature Heart rate Respiratory rate Panting? Breathing effort Other signs
Effortless / labored
Effortless / labored

Include recent exercise, heat, stress, pain, medication, appetite, energy, coughing, vomiting, or diarrhea.

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When should you call a veterinarian?

Monitor and repeat carefully

If the dog is alert and otherwise acting normally after excitement, exercise, handling, or warmth, let it rest and repeat a mildly abnormal reading if safe. VCA recommends allowing an agitated dog to rest for about 10 minutes before repeating an elevated temperature. Do not wait if the dog has breathing difficulty, abnormal gums, collapse, severe weakness, confusion, suspected heatstroke, or another emergency sign.

Contact your regular veterinarian promptly

  • A sleeping or resting respiratory rate is repeatedly above the dog’s baseline or remains around 30 or higher.
  • Temperature remains above the usual range after a safe recheck.
  • Heart rate is persistently unusual for that dog, or the rhythm is irregular.
  • The dog has coughing, reduced stamina, weakness, poor appetite, vomiting, diarrhea, pain, or unexplained panting.
  • You cannot get a reliable measurement but the dog seems unwell.
  • A dog with known heart disease develops a sustained rise in sleeping respiratory rate.

Go directly to an emergency veterinarian

  • Labored breathing, exaggerated chest or abdominal movement, neck extended to breathe, elbows held away from the body, or inability to lie down comfortably.
  • Blue, purple, gray, white, or very pale gums.
  • Collapse, fainting, severe weakness, confusion, seizures, or unresponsiveness.
  • A sustained resting respiratory rate around 60 or more, or a lower rate with obvious distress.
  • Temperature above 104°F, particularly after heat exposure, or below 99°F with weakness, collapse, or cold exposure.
  • Suspected heatstroke, especially with heavy panting, weakness, vomiting, diarrhea, disorientation, or collapse.
  • A very fast, very slow, irregular, weak, or absent pulse with weakness, abnormal gums, collapse, or breathing difficulty.

The dog’s comfort and breathing effort matter more than a cutoff by itself. A dog can need emergency care at a lower respiratory rate if breathing is visibly difficult.

Heatstroke: a special emergency

Heatstroke is hyperthermia, not simply a routine fever. Do not delay transport while trying to obtain a perfect temperature reading.

  1. Move the dog away from heat and contact an emergency veterinary hospital immediately.
  2. Begin cooling with cool or tepid water and airflow as directed by the veterinary team. AAHA advises against ice or very cold water.
  3. Offer small amounts of water only if the dog is alert and can swallow safely; never force water.
  4. Do not wrap the entire dog in wet towels, which can trap heat.
  5. Continue to veterinary care even if the dog appears better; heatstroke can damage organs after temperature begins to fall.
  6. AAHA’s public guidance advises stopping active cooling around 103°F unless the veterinary team gives different instructions.

Follow AAHA’s heatstroke guidance and your emergency hospital’s instructions. Home cooling is first aid, not a substitute for treatment.

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Special cases that need separate interpretation

Newborn puppies

Newborn puppies cannot regulate temperature normally during early life. VCA lists approximate normal rectal temperatures of:

Age Approximate temperature
First week 95–99°F
Weeks two and three 97–100°F
By the fourth week 100–102°F

Their heart-rate expectations also differ from adults. A chilled, weak, dehydrated, or non-nursing neonate can deteriorate rapidly. Seek veterinary advice rather than applying an adult chart. See VCA’s neonatal puppy guidance and Merck’s neonatal-care guidance.

Puppies, senior dogs, and dogs with heart disease

Puppies may have faster heart rates, and age, excitement, play, and size matter. For a dog with a heart murmur, diagnosed heart disease, previous congestive heart failure, or chronic respiratory disease, sleeping respiratory-rate trends can be particularly useful. Ask your veterinarian how often to measure and what change should trigger a call. Never start, stop, or change medication based only on a home number.

Brachycephalic, athletic, postoperative, and medicated dogs

Flat-faced dogs may have baseline airway limitations, highly fit dogs may have lower resting rates, and surgery, anesthesia, or medication can affect readings. Ask your veterinarian to establish an appropriate baseline and explain when a change matters.

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Common mistakes when checking dog vital signs

  • Measuring immediately after exercise: wait until the dog is safely calm unless emergency symptoms are present.
  • Counting panting as ordinary breathing: count during sleep or quiet rest instead.
  • Using touch to diagnose fever: a warm nose or ears do not reliably measure core temperature.
  • Relying on a noncontact forehead thermometer: it may not agree reliably with rectal temperature.
  • Forcing a rectal thermometer: stop if the dog resists strongly or could be injured.
  • Ignoring breathing effort: posture, gum color, comfort, and chest movement can signal danger before a threshold is reached.
  • Assuming a normal number rules out disease: serious illness can occur with vital signs inside a published range.
  • Diagnosing from one abnormal number: stress, technique, activity, heat, pain, or device error can affect a reading—unless emergency signs are present.
  • Changing medication without veterinary direction: home monitoring should guide communication, not replace veterinary care.

FAQ

Is 103°F a fever in a dog?

It is above many conventional adult-dog ranges, but it is not automatically proof of a dangerous fever. Recheck safely after rest and contact your veterinarian if it persists or the dog is unwell. Heat exposure, exercise, stress, fever, and hyperthermia can all raise a reading.

Is 40 breaths per minute normal for a dog?

It may be temporarily elevated after activity, excitement, heat, or stress. While genuinely asleep or calmly resting, 40 breaths per minute is concerning, especially with coughing, weakness, restlessness, or visible effort. Seek emergency care immediately for labored breathing or abnormal gums.

Is a heart rate of 120 normal for a dog?

It may be normal for a small dog, puppy, excited dog, or recently active dog. It is at the upper end of many broad adult references and may be high for a large sleeping dog. Consider age, size, activity, rhythm, pulse strength, and baseline.

What is a normal sleeping breathing rate for a dog?

About 15–30 breaths per minute is a practical range, although many healthy dogs sleep below 20. A persistent rise above your dog’s baseline is more important than one isolated count.

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Does panting count as a dog’s respiratory rate?

Do not use active panting to calculate a calm resting rate. Wait until the dog is asleep or quietly settled and count one complete chest rise-and-fall as one breath. Unexplained panting or panting with weakness, abnormal gums, pain, or distress needs veterinary attention.

Can I use a human thermometer on my dog?

A standard digital thermometer may be used if dedicated to the dog and used safely for a rectal measurement. Never attempt oral measurement or force insertion. Ear and noncontact readings may not be comparable with rectal readings.

How do I take a dog’s pulse?

Place two fingertips on the femoral artery on the inside of the upper hind leg, count for 30 seconds, and multiply by two. Count for a full minute if the rhythm is irregular. Report a weak, absent, or mismatched pulse to your veterinarian.

What temperature is dangerous for a dog?

VCA identifies above 104°F or below 99°F as an emergency-level reading. Circumstances matter: a high temperature after heat exposure may indicate heatstroke, while a low temperature with weakness or collapse may indicate a serious problem. Do not delay care to repeat a reading if the dog is visibly ill.

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Do puppy vital signs differ from adult dog vital signs?

Yes. Puppies generally have different heart-rate expectations, and newborn puppies have substantially lower normal temperatures during their first weeks. Do not assess neonates using an adult chart.

Can stress raise a dog’s vital signs?

Yes. Fear, excitement, restraint, exercise, heat, pain, and clinic stress can temporarily raise temperature, heart rate, and respiratory rate. Let a comfortable dog rest and repeat a questionable reading when appropriate, but do not wait if emergency signs are present.

The practical takeaway

For most calm adult dogs, start with approximately 100–102.5°F, 70–120 beats per minute, and 15–30 sleeping or resting breaths per minute. Measure consistently, establish your dog’s baseline, and record trends.

Numbers should never overrule the dog in front of you. Labored breathing, blue or pale gums, collapse, severe weakness, confusion, or suspected heatstroke calls for emergency veterinary care regardless of whether a vital sign falls within a published range.

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