Hedgehog fall and crush injuries: the first fifteen minutes

Quick answer

The first fifteen minutes after a fall or a crush are about warmth, stillness and a phone call, not about examining the animal.

A pet hedgehog that has fallen from a height, been sat on, stepped on, or caught in a closing door is at risk from things you cannot see. The spines protect the back. Nothing protects the chest, abdomen, spine or head.

The two things that kill in the first hours are shock and internal bleeding, and both are made worse by handling. So the correct first response is to contain the animal warmly and quietly and get it to a vet, not to unroll it and look for wounds.

• Do not try to unball a hedgehog to examine it. That fight costs it more than the examination gains you.
• Put it in a box with a towel, apply gentle warmth to one half of the box, and cover the box.
• Check gum colour if it is already uncurled and you can do it without a struggle. Pale, white or grey gums mean an emergency.
• A hedgehog that cannot ball up at all is a serious sign, not a convenient one.
• Every hedgehog that has been crushed or has fallen from a height should be seen the same day, even if it walks away looking fine.

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An apparently unharmed hedgehog can die a day or two after a crush injury.

Bladder rupture, diaphragmatic tears, liver and spleen bleeds and gut perforation all produce very little to see at first. The hedgehog walks, curls up in its house and looks quiet, which owners read as being shaken. Then it deteriorates over the following one to three days when urine or gut contents reach the abdominal cavity, or when a slow bleed finally decompensates. This is why the rule is a same day veterinary examination after any crush or significant fall, regardless of how well the animal seems.
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Decide in 60 seconds

Why hedgehog trauma hides

The ball is a shield and a mask.

A frightened or painful hedgehog curls, and the curl tightens the more you interfere. That means the entire soft surface you need to examine is the part that disappears. Forcing it open takes real strength, hurts an injured animal, and can worsen a fractured limb or an unstable spine. It is not worth doing at home.

The information you get for free is worth more than what you would get by fighting: is it breathing, how fast, is it warm, is there blood, will it move at all, and does it curl normally when touched.

Prey animals do not show pain.

A hedgehog in serious pain typically becomes still and quiet rather than vocal. Owners describe them as sleepy or sulking. In a nocturnal animal that spends the day asleep anyway, the change can be nearly invisible for a full day.

The injuries with the worst outcome make the least mess.

A skin wound bleeds and is obvious. A torn spleen, a bruised lung, a ruptured bladder or a tear in the diaphragm produce almost nothing at the surface, and are precisely the injuries that a crush or a fall produces.

Small body, fast heat loss.

The ratio of surface area to body mass in an animal this size means heat leaves quickly, especially in an animal in shock with poor peripheral circulation. Cold slows everything: clotting, drug handling, gut function and recovery. Warmth is not comfort care, it is treatment.

The first fifteen minutes

A box, a soft towel, plain gauze and a warmth source. That is the entire kit, and having it ready near the enclosure removes several minutes of searching at the worst possible time.

One. Stop the situation.

Remove the dog, close the door, get the other people to stand still. Most second injuries happen in the panic after the first one.

Two. Contain without a struggle.

Slide both hands, flat, under the whole animal and lift it as a single unit, keeping it level. Do not scoop with one hand under the chest, because that lets the spine and hindquarters hang.

If it is already curled, lift it curled. If it is uncurled and floppy, keep it flat and supported and do not let the body fold.

Three. Box, towel, warmth, dark.

A cardboard box or a carrier, a soft towel with no loops or loose threads, and gentle heat under one half only: a covered heat pad on its lowest setting, or a warm water bottle wrapped in a towel. The unheated half matters, because an injured animal that cannot move away from a heat source can overheat.

Cover the box. Darkness reduces the stress response, and a lower stress response means less demand on a circulation that may already be struggling.

Four. Look, but do not intervene.

Count breaths from outside. Note whether the breathing looks like effort, whether there is blood anywhere, and whether the animal has moved. If it is uncurled and calm enough, lift the lip and look at the gum colour.

Five. Call.

Call an exotics capable vet and say clearly that it is a hedgehog, what happened, from what height or under what weight, and what you can see. Ask whether to come straight in. Not every general practice can help with this species, so the call is also how you find out where to go.

Six. Travel warm and level.

The box goes in the footwell or on a flat seat, secured, with the heat still on one side. Keep the car quiet and the radio off.

What the gums tell you

If the hedgehog is uncurled and settled, a gentle lift of the lip shows the gum. Healthy gums are pink. Do not fight a curled animal to get this information.

Gum colour is the most useful single observation a non-veterinary person can make after trauma, because it reflects circulation rather than damage.

Pink and moist.

Normal. Reassuring, but it does not rule out an injury that has not yet declared itself.

Pale pink or white.

Poor perfusion. Blood loss, shock, or both. This is an emergency and it will not improve on its own.

Grey or blue tinged.

Oxygen is not reaching the tissues. Chest injury, severe shock, or a diaphragmatic tear. Emergency, and further handling is genuinely dangerous.

Brick red.

Can occur with sepsis or with overheating. Also an emergency, in the other direction.

Cold ears and feet, and a hedgehog that feels cool to the back of the hand, tell you the same thing gum colour does. Peripheral circulation shuts down first.

What each mechanism of injury does

A fall from height.

Landing on a hard floor most often produces limb fractures, jaw and facial injuries, and head trauma. Hedgehogs are frequently dropped when they huff and click and the handler flinches, which is why the rule is to handle sitting on the floor or over a lap, never standing.

Height matters, and so does surface. A fall onto tile or laminate transmits far more force than the same fall onto carpet.

A crush, from being sat on, stepped on, or trapped by a door.

This is the one that produces the delayed deaths. The compression injures organs without breaking skin. Watch specifically for a hedgehog that does not urinate afterwards, or that becomes progressively quieter and more tucked up over the next day or two.

Hedgehogs hide in exactly the places people sit: under blankets, inside cushions, in laundry, behind sofa backs. Check before you sit and before you close a door.

A wheel or a mesh injury.

Wire or mesh wheels catch feet and legs. Injuries range from a degloved toe to a fracture, and a foot trapped for hours loses its blood supply. Solid running surfaces prevent this entire category.

Threads and fibres.

Loose loops in fleece and fabric hides wrap around toes and legs and cut off circulation. The limb below swells and darkens. This can happen overnight without a sound.

A fall while climbing out of an enclosure.

Hedgehogs climb better than owners expect and land badly. An escape attempt often produces the fall that brings them to the clinic.

Look-alikes that are not trauma

A hedgehog found collapsed or wobbly, where nobody witnessed an accident, is not necessarily injured. These are the conditions that get mistaken for trauma, and each has a distinguishing feature.

Hibernation attempt.

A cold enclosure triggers an attempt to hibernate in a species that does not do it safely in captivity. The animal is cool to the touch, unresponsive, and often flat rather than curled. Warmth begins to reverse it, which is a strong clue.

Wobbly hedgehog syndrome.

A progressive neurological disease. The key difference is time course: it develops over weeks with gradually worsening hind limb ataxia, usually starting at the back and moving forward, without any incident.

Ear or vestibular disease.

Head tilt, circling and falling over, but with normal limb strength and no history of impact.

Hypoglycaemia or systemic illness.

Weakness, unwillingness to curl and collapse can come from severe illness of any kind, including tumours, which are common in this species.

Heat stress.

A hot hedgehog lies flat and splayed out, refuses to curl, and may drool. This is the opposite emergency and cooling, not warming, is the treatment.

If nobody saw what happened, describe the whole picture to the vet rather than presenting a diagnosis. The distinction between these is made on examination, not by inference at home.

The days after

The examination is not the end. Confine and observe.

First 24 hours.

Shock and hypothermia. Watch breathing rate and effort, gum colour, and whether the animal will curl. Keep the environment warm and dark, no wheel, no free roaming, shallow food and water within reach so it does not have to climb.

24 to 72 hours.

The window for the delayed problems: bladder rupture, peritonitis, a slow abdominal bleed, and diaphragmatic hernia showing up as increasing breathing effort. Track urination and defecation specifically. No urine over this period is an emergency.

Day 3 to two weeks.

Infection of any wound, abscess formation under the spiny skin, quill loss over bruised areas, and lameness that fails to improve. A fracture that was missed on the first visit usually declares itself here as persistent non-weight-bearing.

Weight is the objective measure.

Weigh daily on kitchen scales during recovery and write it down. A hedgehog that is quietly not eating loses weight before it looks any different.

What the vet will want to know

The goal of the first fifteen minutes: warm, contained, breathing easily and undisturbed while transport is arranged.

What never to do

Do not force a curled hedgehog open. It causes pain, risks worsening fractures, and tells you very little.

Do not give human medicines of any kind.

Do not apply creams, ointments, antiseptics or powders to wounds. Many are toxic if licked, and they interfere with the vet's assessment of the wound.

Do not bathe or soak an injured hedgehog. Wet plus injured plus small equals hypothermia.

Do not offer food or water by syringe to an animal that is collapsed, weak or breathing hard. Fluid down the airway is a common way to turn a survivable injury into a fatal one.

Do not put the animal straight back on its wheel or let it climb during recovery.

Do not wait until morning because it is nocturnal and seems settled. The delayed complications of a crush injury do not wait.

When to get help

Go immediately, calling ahead while you travel, for pale, white, grey or blue gums, laboured or open mouthed breathing, bleeding that does not stop with gentle pressure, an animal that cannot curl, dragging back legs, or a hedgehog that is unresponsive.

Go the same day, without exception, after any crush injury, any fall from above lap height, any trapped limb, or any incident involving a door or a piece of furniture.

Go within a day for lameness that is not improving, a hedgehog that is quieter than usual since the incident, refusal of food, or a swelling anywhere.

Get advice urgently at any point in the following three days if the hedgehog has not urinated, becomes progressively more tucked up, or starts breathing harder. Those are the signatures of the delayed complications, and they are the reason the follow-up window matters as much as the first fifteen minutes.