Hedgehogs: dog and cat attacks, first response

Quick answer

A pet African pygmy hedgehog will not meet a snake. The predator it actually meets is the one that already lives in the house: the family dog or the family cat.

Every contact between a dog or cat and a hedgehog is a veterinary emergency, even when you cannot find a wound. Spines protect the back. They do not protect the face, the legs, the belly or the eyes.

• Separate the animals first, then assess. Do not try to assess while the dog is still in the room.
• Assume there are puncture wounds you cannot see.
• Keep the hedgehog warm on the way to the vet. Shock plus cold is the dangerous combination.
• Do not wash, disinfect or bandage a wound with household products.
• Book the appointment even if the hedgehog looks completely fine.

Warmth, quiet and a carrier ready. The useful first response is stabilising and transporting, not treating.

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Any bite or grab from a dog or cat needs same-day veterinary treatment, whether or not you can see a wound.

Cat and dog mouths carry bacteria that cause rapidly spreading infection. A puncture through spiny skin seals over at the surface and traps that infection underneath, so the worst wounds are frequently the ones that look like nothing. Crushing injuries to the chest and abdomen also leave no external mark.
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Decide in 60 seconds

Why a household predator is so dangerous

A hedgehog's defence is a mechanical one. Muscles pull a mantle of spines over the head and feet, and the animal becomes a sphere.

That works against a mouth trying to bite through the back. It does not work against sustained pressure from a large jaw, which transmits force through the ball to the chest and abdomen.

It also does not work while the hedgehog is being pursued in the open, before the ball closes. In those seconds the face and legs are exposed, which is why eye and limb injuries are so common.

Cats bring a different problem. A cat bite is a narrow deep puncture with a heavy bacterial load, delivered by teeth designed to reach past fur. Skin closes over it almost immediately, and infection develops in the tissue underneath.

Dogs bring crush and shake injuries. Internal damage without any external wound is common, and a hedgehog that walks away looking normal may be bleeding internally.

Neither species needs to intend harm. A curious sniff from a dog that has never shown aggression can crush a small animal.

What to do in the first minutes

A folded towel, plain gauze and a carrier are all a home kit needs for this. Everything else is done by the vet.

Separate.

Remove the dog or cat from the room and close the door before you touch the hedgehog. Do not carry an injured hedgehog past an excited animal.

Contain.

Slide a folded towel or two flat hands underneath and lift. Do not grip, do not squeeze, and do not try to open a ball.

Warm.

Put the hedgehog in a carrier lined with fleece, in a warm room, out of draughts. A hedgehog in shock loses heat fast, and cold makes everything worse in this species.

Control obvious bleeding only.

Light pressure with clean gauze. Nothing else.

Call.

Phone an exotics or small mammal vet, describe what happened, and go. Call ahead rather than arriving unannounced, so they can prepare.

Bring the history.

Which animal, how long the contact lasted, whether the hedgehog was in the mouth, and what the hedgehog has done since.

Assessing without making it worse

Look, do not probe. A hedgehog that stays balled should be transported balled and examined under veterinary sedation if needed.

Look, from the outside, without unrolling.

Check whether an eye is closed, weeping, cloudy or bulging.

Check whether breathing is fast, shallow, or noisy.

Look for blood on the fleece, on the floor, or matted into the spines.

Note whether the hedgehog is holding a limb up or refusing to bear weight when it does move.

Note whether it will unball at all. A hedgehog that stays locked shut after several quiet minutes on a warm surface is telling you something.

Do not spend long on this. None of it changes the decision, which is already made. It only helps the vet.

Prevention, which is the whole strategy

What never to do

Do not decide to wait and watch. Infection from a cat bite develops fast, and internal injury from a dog often shows late.

Do not force a balled hedgehog open to inspect it. You will injure it further and drive spines into your hands.

Do not offer food or water to a hedgehog in shock. It cannot use them and it may inhale liquid.

Do not use a hot water bottle directly against the skin or a heat source without a thick cover. Burns are easy to cause on a small animal that cannot move away.

Do not try to introduce the animals afterwards to help them get along. Predation is not a misunderstanding, and it does not resolve with familiarity.

After veterinary treatment, recovery is warmth, quiet, and no handling beyond what the vet has asked for.

When to get help

Immediately, for any contact between a dog or cat and a hedgehog, with or without a visible wound.

Immediately for a hedgehog that is cold and floppy, breathing with effort, bleeding, will not unball, has an eye injury, or is not using a limb.

Bring which animal was involved, how long the contact lasted, when it happened, the hedgehog's age and recent weight, and the room temperature it has been kept at since. The timeline matters as much as the examination.