Horse First Aid: 6 Essential Skills Every Owner Should Know

By Dr Duncan Houston

The first few minutes of an equine emergency are rarely about performing complicated treatment.

They are about staying safe, recognising that something is wrong, collecting reliable information and avoiding actions that could make the situation worse.

A horse owner who can provide an accurate temperature, heart rate, respiratory rate, gum assessment and timeline gives the attending veterinarian a much clearer picture before they even arrive.

These skills do not replace veterinary care. They help you recognise when care is needed and support your horse safely while professional help is being arranged.

Quick Answer

Every horse owner should know how to take a rectal temperature, measure heart rate, count breathing, assess the gums and capillary refill time, check digital pulses and administer prescribed eye medication safely.

Practise these skills while your horse is healthy so you know what is normal for that individual. Call your veterinarian when readings are persistently abnormal, several measurements change together, or the horse has pain, weakness, breathing difficulty, abnormal gums, neurological signs or an eye problem. (University of Minnesota Extension)

Normal Vital Signs for an Adult Horse at Rest

Published reference ranges vary slightly, so your horse’s normal resting baseline is often more useful than one isolated textbook number.

Measurement	Common resting range
Rectal temperature	37.5°C to 38.6°C, or 99.5°F to 101.5°F
Heart rate	Approximately 30 to 44 beats per minute
Respiratory rate	Approximately 8 to 20 breaths per minute
Gums	Pink and moist
Capillary refill time	1 to 2 seconds
Digital pulses	Usually faint or difficult to feel

These figures apply to healthy adult horses at rest. Exercise, excitement, transport, pain, hot weather and fear can temporarily increase temperature, heart rate and respiratory rate. Foals normally have higher heart rates than adult horses and require age-specific interpretation. (AAEP)

Before You Start: Safety Comes First

Do not attempt to take measurements from a horse that is striking, kicking, collapsing, rolling violently or severely uncoordinated.

A quiet horse can react suddenly when painful, frightened or touched in an unfamiliar area. Use an experienced handler, work in a clear area and maintain an escape route.

Stand close beside the horse rather than at kicking distance, but never stand directly behind it. If the horse cannot be handled safely, tell your veterinarian what you can observe from a distance instead of becoming the emergency’s second patient. (Penn State Extension)

Skill 1: Taking a Rectal Temperature

Temperature is one of the most useful measurements a horse owner can provide.

A fever may be the first detectable sign of infection. An elevated temperature can also result from exercise, hot weather or poor heat dissipation, so the number must always be interpreted in context.

What you need

Use:

• A plastic digital thermometer reserved for the horse

• Water-based lubricant or petroleum jelly

• An experienced handler

• A phone, watch or record sheet for documenting the result

Avoid glass mercury thermometers because they can break and take longer to read.

How to take the temperature safely

1. Have the handler stand on the same side of the horse as you.

2. Stand close beside the hindquarter, not directly behind the horse.

3. Turn the thermometer on and lubricate the tip.

4. Lift the tail gently to one side.

5. Insert the sensing tip into the rectum and angle it slightly against the rectal wall. A thermometer sitting in a ball of manure may give an inaccurate reading.

6. Hold the thermometer securely for the entire measurement. Never leave it unattended.

7. Remove it when it signals completion.

8. Record the result, time and circumstances.

9. Clean and disinfect the thermometer before storing it.

Do not attempt this when the horse is kicking, clamping its tail aggressively or becoming increasingly distressed. A veterinarian or experienced horse handler should demonstrate the technique before you first need it during an emergency. (VetMed & BioSciences)

What temperature is concerning?

A resting temperature above approximately 38.6°C, or 101.5°F, should be interpreted alongside the horse’s baseline and other signs.

A horse that has recently exercised may temporarily reach 39.4°C, or 103°F. The temperature should begin falling with rest and appropriate cooling.

Contact your veterinarian when:

• The temperature is above the horse’s normal baseline and remains elevated

• The horse is dull, not eating, coughing or producing nasal discharge

• The horse has diarrhoea, colic, swelling or lameness

• More than one horse has an elevated temperature

• The temperature continues rising over repeated readings

A temperature above 39.4°C, or 103°F, in a resting horse is more concerning. An overheated horse above this temperature needs active cooling. Temperatures above 40.6°C to 41.1°C, or 105°F to 106°F, especially with weakness, persistent rapid breathing or incoordination, are an emergency. (University of Minnesota Extension)

Fever or overheating?

A true fever is more likely when the horse has been resting and also appears unwell.

Overheating is more likely after exercise, transport or exposure to hot and humid conditions. An overheated horse commonly has rapid breathing, increased heart rate, heavy sweating or failure to sweat normally.

When heat stress is possible, move the horse into shade, remove unnecessary tack or rugs and begin continuous cooling with cool or cold water while contacting your veterinarian. Do not delay cooling a dangerously hot horse because you are uncertain whether the temperature is technically a fever. (University of Minnesota Extension)

Skill 2: Measuring Heart Rate or Pulse

Heart rate can provide valuable information about pain, circulation, shock and how well a horse is recovering after exercise.

A resting adult horse generally has a heart rate of approximately 30 to 44 beats per minute. What matters most during illness is the combination of the rate, its trend and the horse’s other clinical signs. (University of Minnesota Extension)

Using a stethoscope

Place the stethoscope low on the left side of the chest, just behind the elbow.

Listen for the paired “lub-dub” sound. One complete lub-dub is one heartbeat, not two.

Count for 30 seconds and multiply by two. When the rhythm appears irregular, count for a full minute and tell your veterinarian what you heard.

Feeling the pulse under the jaw

The mandibular or facial artery can usually be felt where it passes beneath the lower jaw.

1. Curl your index and middle fingers beneath the jaw.

2. Press the artery gently against the bone.

3. Do not use your thumb because you may feel your own pulse.

4. Count for 30 seconds and multiply by two.

5. Count for a full minute if the rhythm is irregular.

Counting for 15 seconds and multiplying by four is quicker, but a single missed or extra beat creates a larger error. A 30 or 60-second count is preferable when the horse will stand quietly. (Penn State Extension)

When is the heart rate concerning?

Contact your veterinarian when the resting heart rate is persistently above approximately 50 beats per minute, particularly when the horse has colic, weakness, abnormal gums or reduced appetite.

A rate above 60 beats per minute in a painful or sick adult horse is generally more concerning, but the number should not be used alone to decide whether a horse is safe.

Heart rate may rise because of:

• Pain

• Fear or excitement

• Fever

• Heat stress

• Dehydration

• Blood loss

• Shock

• Heart rhythm abnormalities

• Recent exercise

A horse with severe colic may initially have only a moderately elevated heart rate. Do not delay calling because the number has not crossed a particular threshold. (University of Minnesota Extension)

Skill 3: Counting Respiratory Rate and Recognising Abnormal Breathing

Count the respiratory rate before handling the horse whenever possible. Approaching, restraining or examining the horse may alter its breathing.

One complete inhalation and exhalation counts as one breath.

How to count breathing

Observe:

• The flank moving in and out

• The ribs expanding and relaxing

• The nostrils opening and closing

You can also listen over the trachea with a stethoscope.

Count for 30 seconds and multiply by two. When breathing is irregular, count for a full minute.

A healthy resting adult horse commonly takes approximately 8 to 20 breaths per minute, although published normal ranges vary. (AAEP)

Do not measure only the number

The amount of effort matters just as much as the rate.

Look for:

• Flaring nostrils at rest

• Marked abdominal movement

• The horse extending its head and neck

• Heaving at the flank

• Noisy inhalation or exhalation

• Frothy or excessive nasal discharge

• Coughing that interferes with breathing

• Blue, purple or grey gums

• Distress or inability to settle

Persistent breathing above approximately 30 breaths per minute at rest warrants veterinary advice. Laboured breathing, blue gums, collapse or obvious respiratory distress is an emergency regardless of the calculated rate. (University of Minnesota Extension)

What about after exercise?

Heart rate and respiration should begin declining once exercise stops.

A horse whose rapid heart and respiratory rates are not clearly improving within approximately 20 minutes may be experiencing excessive exertion, heat stress or another medical problem.

Stop work, remove tack, move the horse into shade and begin cooling when overheating is possible. Contact your veterinarian if recovery is delayed or the horse develops weakness, distress or incoordination. (University of Minnesota Extension)

Skill 4: Checking the Gums and Capillary Refill Time

The gums provide information about circulation, hydration and oxygen delivery.

Lift the upper lip and examine the gum above the front teeth. Assess three things:

1. Colour

2. Moisture

3. Capillary refill time

What normal gums look like

Healthy gums are generally salmon-pink and moist.

To measure capillary refill time:

1. Press a finger firmly against the gum until the area turns pale.

2. Release the pressure.

3. Count how long it takes for the pink colour to return.

Normal colour should return within approximately one to two seconds. A refill time longer than three seconds is abnormal and warrants veterinary attention. (University of Minnesota Extension)

What abnormal colours can mean

Pale or white gums may occur with blood loss, anaemia, shock or poor circulation.

Dark red or brick-red gums may occur with severe inflammation, endotoxaemia, heat stress or circulatory disturbance.

Blue, purple or grey gums suggest inadequate oxygen delivery or severe circulatory failure and should be treated as an emergency.

Yellow gums may indicate jaundice associated with liver disease, haemolysis or other systemic disease.

Dry or tacky gums may indicate dehydration, although gum moisture is only one part of the assessment.

Gum colour is not a diagnosis. Lighting, natural pigmentation and recent eating can alter the appearance. Look at the whole horse and compare the finding with heart rate, temperature, behaviour and capillary refill time. (University of Minnesota Extension)

Skill 5: Checking Digital Pulses and Hoof Heat

Digital pulses are felt in the arteries supplying each foot.

Every horse owner should know where their horse’s normal pulses are located because a new strong or bounding pulse can indicate significant inflammation or pain within the hoof.

How to feel a digital pulse

Use your index and middle fingers.

Feel along the inner and outer sides of the lower fetlock or pastern, where the digital arteries travel towards the foot. Apply gentle pressure until you detect the pulse.

Compare:

• Left front with right front

• Left hind with right hind

• The strength of the pulse today with the horse’s normal baseline

In many healthy horses, digital pulses are faint or difficult to locate. A forceful, bounding pulse is more significant than simply being able to feel one.

What does a strong digital pulse mean?

A strong pulse in one foot may occur with:

• A hoof abscess

• Sole bruising

• A puncture

• A fracture or other painful hoof injury

• Local inflammation

Strong pulses in both front feet, particularly with increased hoof heat, shifting weight, reluctance to turn or a rocked-back stance, raise concern for laminitis.

Laminitis requires urgent veterinary assessment. Early intervention matters, and a horse with suspected acute laminitis should not be repeatedly walked or transported without veterinary advice. (University of Minnesota Extension)

Hoof warmth alone is not diagnostic. Exercise, ambient temperature, recent shoeing and standing in sunlight can influence hoof temperature. The pattern of heat, pulse strength, pain and posture is more useful than any one finding.

Skill 6: Applying Prescribed Eye Medication Safely

Horse eye problems should be taken seriously.

Squinting, tearing, swelling, cloudiness, light sensitivity or keeping an eye closed may result from a corneal ulcer, foreign material, trauma, infection or uveitis. Several of these conditions can deteriorate rapidly and threaten vision.

Contact your veterinarian promptly whenever a horse develops a painful or visibly abnormal eye. Do not begin treatment with old medication before the eye has been examined. (Horse Report)

Why leftover eye medication can be dangerous

Different eye conditions can look similar while requiring completely different treatment.

A corticosteroid eye medication may be appropriate for certain inflammatory conditions, but corticosteroids are contraindicated when a corneal ulcer is present because they can delay healing and worsen corneal infection or tissue breakdown.

The eye should generally be stained with fluorescein to check for corneal ulceration before topical corticosteroids are used. (MSD Veterinary Manual)

How to apply prescribed medication

Ask your veterinarian to demonstrate the technique with your horse.

General principles include:

1. Wash and dry your hands or use clean gloves.

2. Check the medication label and confirm which eye is being treated.

3. Have an experienced person hold the horse.

4. Stand beside the horse’s head, not directly in front.

5. Steady your medication hand against the horse’s face so it moves with the horse if the head moves.

6. Keep the tube or bottle tip parallel to the face rather than pointing it directly towards the eye.

7. Gently open the eyelids and place the prescribed drops or ointment into the conjunctival sac.

8. Do not touch the tip against the cornea, eyelid, eyelashes or your fingers.

9. Replace the cap immediately.

10. Record the dose and time.

Never force medication into an eye when the horse is throwing its head or attempting to strike. Repeatedly missing doses or fighting with the horse may justify placement of a subpalpebral lavage system, which allows medications to be delivered through tubing without repeatedly manipulating the painful eye. (Weill School of Veterinary Medicine)

When is an eye problem an emergency?

Seek urgent veterinary care when:

• The eye is held closed

• The cornea looks cloudy, blue, white or irregular

• There is a visible wound or foreign object

• The pupil looks different from the other eye

• There is blood inside or around the eye

• The eye appears ruptured, collapsed or protruding

• Pain is severe or rapidly worsening

• Vision appears impaired

• The horse has injured the eyelid margin

• The condition is worsening despite treatment

Do not remove an embedded object. Prevent the horse from rubbing the eye and wait for veterinary instructions.

How to Interpret the Findings Together

One abnormal measurement rarely gives the complete answer.

What concerns veterinarians most is often the pattern.

Fever with respiratory signs

An elevated resting temperature combined with coughing, nasal discharge or swollen lymph nodes raises concern for infectious respiratory disease.

Separate the horse from others and contact your veterinarian.

High heart rate with colic

A persistently elevated heart rate, abnormal gums, prolonged capillary refill and worsening abdominal pain can indicate significant dehydration, intestinal compromise or circulatory shock.

Do not keep redosing pain medication or walking the horse indefinitely instead of arranging an examination.

Fast breathing with a high temperature

After exercise or in hot weather, this may indicate heat stress.

In a resting horse with fever, it may result from pain, pneumonia, pleuritis or systemic illness.

Bounding digital pulses with reluctance to turn

This pattern raises concern for laminitis, especially when both front feet are affected.

Squinting with excessive tearing

This should be treated as an eye emergency until a veterinarian has ruled out a corneal ulcer or penetrating injury.

The aim of first aid is not to diagnose every condition. It is to identify the pattern, communicate it clearly and avoid dangerous delays.

How Worried Should You Be?

Lower concern

The horse is bright, eating and behaving normally. Measurements are close to its established resting baseline, and there are no signs of pain, breathing difficulty or neurological disease.

Record the findings and continue monitoring.

Moderate concern

There is one mild abnormality, such as a slightly raised temperature after transport, a mildly increased pulse after excitement or a subtle change in appetite.

Allow the horse to rest quietly and repeat the measurements within approximately 15 to 30 minutes. Contact your veterinarian if the abnormality persists, increases or is joined by another sign.

High concern

Contact your veterinarian promptly when:

• Resting heart rate remains above approximately 50 beats per minute

• Respiratory rate remains above approximately 30 breaths per minute

• Temperature is elevated and the horse appears unwell

• Gums are dry, tacky or abnormally coloured

• Capillary refill time exceeds three seconds

• Digital pulses are strongly bounding

• The horse has colic, diarrhoea, significant lameness or an abnormal eye

• The horse is not eating or drinking normally

Critical concern

Seek emergency veterinary care immediately for:

• Severe or laboured breathing

• Blue, purple, grey or very pale gums

• Collapse or inability to stand

• Severe incoordination

• Repeated seizures

• Uncontrolled bleeding

• Severe or escalating colic

• Profuse diarrhoea with weakness

• A non-weight-bearing limb

• Suspected fracture

• Sudden blindness

• A ruptured or penetrating eye injury

• Heatstroke

• Rapid deterioration over minutes or hours

Do not wait for all the vital signs to become abnormal. Serious disease may be present before every measurement changes.

What Should You Do During a Horse Emergency?

1. Protect yourself and the horse

Remove hazards, keep other people away and avoid standing where the horse could kick, strike or fall onto you.

A severely painful or neurological horse may behave unpredictably.

2. Call your veterinarian early

Tell the veterinarian:

• What happened

• When the signs began

• Whether they are worsening

• Temperature, pulse and respiration

• Gum colour and capillary refill time

• Appetite, drinking, urination and manure production

• Any medication already given

• Whether the horse can walk and bear weight

• Whether other horses are affected

Do not wait until you have collected every possible measurement before calling when the situation is clearly urgent.

3. Keep a written timeline

Record the exact time of:

• First signs

• Vital-sign measurements

• Medication

• Manure or urine passage

• Changes in behaviour

• Veterinary phone calls

• Photographs or videos

A timeline is particularly useful when several people are caring for the horse.

4. Follow veterinary instructions

Your veterinarian may advise you to:

• Remove feed

• Continue offering water

• Begin active cooling

• Apply pressure to bleeding

• Bandage a wound

• Keep the horse confined

• Walk the horse briefly

• Stop walking

• Prepare for transport

• Avoid transport until stabilisation

The correct action depends on the suspected problem.

5. Do not administer unapproved medication

Giving bute, Banamine, sedatives, antibiotics or eye drops before speaking with the veterinarian can mask signs, create toxicity or make the problem harder to assess.

Medication already prescribed for another horse or a previous illness is not automatically appropriate for the current emergency.

Common Mistakes Horse Owners Make

Counting the “lub” and “dub” as separate heartbeats

The paired sound represents one complete heartbeat.

Using the thumb to feel a pulse

You may count your own pulse instead of the horse’s.

Taking respiration after exciting the horse

Observe breathing from a distance before restraining or examining the horse.

Relying on one number

A normal temperature does not rule out colic, lameness, neurological disease or a serious eye problem.

Standing directly behind the horse

Even a normally quiet horse can kick when painful or startled.

Waiting for dramatic symptoms

Subtle appetite loss, mild squinting, softer manure or a gradually rising pulse may be the earliest warning.

Using leftover eye medication

The wrong medication, particularly a topical corticosteroid in an ulcerated eye, can turn a treatable condition into a vision-threatening emergency.

Repeating measurements instead of calling

Taking the heart rate for the seventh time does not help when the horse is clearly deteriorating. Call the veterinarian and give them the information you already have.

How to Practise These Skills Before an Emergency

Choose a time when your horse is healthy, calm and resting.

Over several days:

1. Take the temperature at approximately the same time.

2. Measure the heart rate.

3. Count respiration before handling.

4. Check gum colour and capillary refill time.

5. Locate the digital pulses.

6. Record what is normal for that horse.

Practise under your veterinarian’s supervision during a routine visit. This confirms your technique and allows your horse to learn that the process is not threatening.

A baseline should include the number and what normal looks like:

• How pink are the gums?

• Are the digital pulses normally difficult to feel?

• Does the horse resent having its tail lifted?

• What is its usual resting respiratory pattern?

• Is there normal pigment on the gums?

Knowing the normal horse makes the abnormal horse much easier to recognise.

What Should Be in a Horse First-Aid Kit?

A practical kit may include:

• Digital thermometer

• Lubricant

• Stethoscope

• Disposable gloves

• Sterile saline

• Non-stick wound dressings

• Gauze and absorbent padding

• Cohesive bandage

• Clean towels

• Bandage scissors

• Flashlight or head torch

• Hoof pick

• Instant cold packs

• Written veterinary contact details

• Transport contacts

• A medication and medical-history record

Keep the kit where it can be reached quickly, not locked inside a building that only one person can access.

Check it several times each year for damaged packaging, expired products and missing equipment. AAEP emergency guidance emphasises preparing and mentally rehearsing a response before an emergency occurs. (AAEP)

Frequently Asked Questions

Can I use a human digital thermometer for my horse?

Yes, a plastic digital thermometer can be used, but it should be clearly labelled and reserved exclusively for the horse. Hold it throughout the reading and do not attempt the procedure when the horse cannot be handled safely. (VetMed & BioSciences)

What heart rate is dangerous in a horse with colic?

A persistent heart rate above approximately 50 beats per minute is concerning and should be reported to your veterinarian. Higher rates can indicate increasing pain, dehydration or circulatory compromise, but serious colic can still occur at lower rates. (University of Minnesota Extension)

Should I walk a horse with colic?

Walk only when it can be done safely and appears to make the horse more comfortable. Do not walk the horse or yourself to exhaustion. Some conditions that resemble colic, including laminitis, tying-up and pleuritic pain, may worsen with forced movement. (University of Minnesota Extension)

Can I use old eye ointment while waiting for the veterinarian?

No. Contact your veterinarian before placing medication into an abnormal eye. Some medications contain corticosteroids that are dangerous when a corneal ulcer or infection is present. (Horse Report)

Do foals have the same normal vital signs as adult horses?

No. Foals normally have faster heart and respiratory rates. For example, a foal under one week may have a resting heart rate of approximately 60 to 120 beats per minute. Use age-specific veterinary guidance rather than applying adult thresholds. (University of Minnesota Extension)

Final Thoughts

You do not need to perform advanced procedures to make a real difference during an equine emergency.

The most valuable owner is often the one who stays calm, handles the horse safely, recognises that the situation is changing and communicates accurate information early.

Learn your horse’s normal temperature, pulse, breathing, gums and digital pulses. Practise before something goes wrong. Treat painful eyes, abnormal breathing, severe colic, neurological signs and rapidly worsening readings with the urgency they deserve.

These skills are not about becoming your horse’s veterinarian.

They are about becoming a safer, more useful member of the veterinary team when your horse needs help.

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Use ASK A VET™ to record your horse’s baseline vital signs, medication times, symptom changes, photographs and emergency notes. When you are unsure whether a reading is abnormal or a change can safely be monitored, tailored veterinary support can help while you arrange direct care from your regular veterinarian.