The hedgehog weekly check: a head-to-toe routine that catches problems early

Quick answer

A hedgehog does not tell you it is unwell. A weekly routine is how you find out anyway.

Hedgehogs have no long coat to trim and nothing to shave. What they do have is spines that hide the skin, a habit of balling up when examined, an activity period that happens while you are asleep, and a strong instinct to conceal illness. The result is that owners routinely notice a problem weeks after it started.

The fix is a short, repeatable, whole-animal check done at the same time every week, with a weight written down. It takes a few minutes and it is the single most effective thing an owner of this species can do.

• Weigh first, every time, on the same digital kitchen scale. The trend finds problems long before your eyes do.
• Check nine areas in the same order every week so nothing is skipped: weight, face, ears, mouth, quills and skin, body and belly, feet, rear end, and movement.
• Do the check when the hedgehog is naturally awake in the evening, warm, and after it has had a chance to unball.
• Photograph anything you are unsure about, from the same angle each week. Change over time is the information.
• Never force a balled hedgehog open. Warmth, patience and a flat hand work; prising does not.

Decide in 60 seconds

Why the check exists

Three features of this species conspire to hide illness.

Nocturnality. Everything a hedgehog does happens while you are asleep. Wheel distance, feeding, drinking and toileting all occur overnight, so the only reliable evidence is what is left behind in the morning and what you deliberately go and look at in the evening.

Concealment. Prey species that show weakness are removed from the population. Hedgehogs are very good at looking normal. By the time a hedgehog visibly appears ill, the illness is usually established.

The spines and the ball. A hedgehog that curls presents you with a sphere. Skin, belly, feet, face and rear end are all inside it. Unless you deliberately create the conditions in which it will uncurl, you simply cannot see most of the animal.

A weekly routine defeats all three, because it substitutes a system for observation.

Before you start

Choose a consistent time in the evening, once the hedgehog has been up and moving. Warm hands, a warm room, and no rush.

Sit on the floor or over a bed, not at a table. Hedgehogs walk off edges without hesitation and a fall onto a hard floor injures them.

Have a towel on your lap, good light, the scale, a small container to weigh in, and somewhere to write the numbers.

Let the hedgehog unball in its own time. Cup it in both hands, keep still, and wait. Most will open within a couple of minutes if they are warm and the room is quiet.

If the hedgehog huffs, clicks and stays tight, stop and try again another evening. A check forced on a defensive animal teaches it that handling is unpleasant, which makes every future check harder.

Everything ready before you pick the hedgehog up. Fetching a forgotten item mid-check is how animals get dropped.

The nine-point check, in order

1. Weight.

Put the container on the scale, zero it, and put the hedgehog in. Record the number with the date. This is the most important thirty seconds of the whole routine.

What you are looking for is a trend, not a threshold. A consistent fall across two or more weeks is significant even when each step looks small, because a hedgehog is small enough that a modest absolute change is a large proportion of its body mass. A steady rise in an adult that is not growing is heading towards obesity, which brings its own problems including fatty liver disease and an inability to curl.

2. Face and eyes.

Eyes should be bright, round, dark and clear, with no discharge and no crusting at the corners. Look for cloudiness, an eye that looks smaller or larger than the other, or one the hedgehog keeps closed. Eye injuries and infections are common in this species because the eyes are prominent and the animal pushes its face into things.

Look at the nose. It should be moist but clean. Bubbling, thick discharge or crusting is a respiratory sign.

3. Ears.

Look at the edges of the ear flaps. Healthy edges are smooth and rounded. Ragged, crusty, thickened or notched edges are one of the most reliable early signs of skin disease in hedgehogs, and both mites and ringworm produce them.

Look into the ear opening for discharge, a smell, or dark waxy material.

4. Mouth and teeth.

You will not get a full look, and you should not try to force one. What you can do is check the front teeth and the lips for tartar, reddened gums, a broken tooth, a swelling, or a bad smell. Any of these means the hedgehog needs a sedated examination, because dental disease and oral tumours are both common and both start where you cannot see.

Watch how it eats afterwards. Dropping food, chewing on one side, or preferring soft items are indirect evidence of a painful mouth.

5. Quills and skin.

Run a hand gently over the spines, from head to rump. They should be firm, evenly distributed, and the skin between them clean, pale and supple.

Bare patches matter, and the question is what the skin looks like underneath. In a young hedgehog going through quilling, spines are lost and replaced and the skin beneath looks normal. Quill loss with flaky, crusty, red or thickened skin is a medical finding, and mites, ringworm, bacterial infection and dry skin all appear this way. Ringworm can pass to people, so testing rather than guessing matters.

Dry flakiness is very common. Before treating it, look at how often the hedgehog is bathed, because over-bathing is the most frequent cause.

6. Body and belly.

With the hedgehog relaxed in your hands, run your fingertips over the underside. You are feeling for lumps, swellings, a distended belly, or an area the hedgehog reacts to.

Tumours are common in pet hedgehogs from middle age onwards, and a lump found small is a completely different conversation from a lump found large. In females, check for any swelling or discharge from the vulva, since uterine disease is frequent in unspayed animals. In males, check that the sheath area is clean and that nothing is wrapped around it.

Body condition is assessed by feel, not by weight alone. A hedgehog should be able to curl completely; one that cannot is overweight. Thick fat pads under the front legs point the same way. A sharp, prominent spine and hollow flanks mean the opposite.

7. Feet and legs.

Look at all four feet, including between the toes and the pads.

Faeces caked onto the feet, sometimes called poop boots, comes from running on a soiled wheel. It hardens, it rubs, and it causes sores. Soften it with a shallow warm foot soak and lift it away gently rather than picking at dry material.

Look for a thread, a hair or a fibre wrapped around a toe. These tighten as the animal moves and cut off the blood supply, and a toe can be lost. If you cannot remove it easily, that is a same-day veterinary job rather than a wait-and-see.

Check the pads for redness, swelling, cracks or sores. Check nail length: overlong nails curl round and grow into the pad.

8. Rear end.

The area around the vent should be clean and dry. Soiling, matting or staining means either loose droppings or an animal that cannot reach to clean itself, and both need explaining.

Look at the droppings in the enclosure while you are there. Normal hedgehog droppings are firm and dark. Green, slimy, very loose or bloody droppings are a same-week question and sometimes a same-day one.

9. Movement.

Put the hedgehog down on a flat surface and watch it walk. Both back legs should push evenly, the body should be lifted clear of the floor, and it should be able to turn and right itself easily.

Wobbling, splaying, dragging the hind legs, falling to one side, or an inability to right itself are all significant. The first thing to exclude is cold, because a chilled hedgehog attempting to hibernate looks neurologically abnormal. If the hedgehog is warm and still wobbly, it needs veterinary assessment, and progressive hind-limb weakness in particular is investigated carefully.

Smooth ear edges and clean skin between the quills. Ragged ear margins are one of the earliest visible signs of skin disease.

What to log, and why the log beats memory

A useful record is short. Date, weight, and a one-word note for each of the nine areas. Anything abnormal gets a photograph.

Three patterns only become visible in a series.

A falling weight trend. Almost every serious hedgehog illness produces this, often weeks before anything else.

A slowly changing lump. Nobody can judge growth by memory. Photographs from the same angle, with a familiar object in shot for scale, answer it in seconds.

Drift in behaviour. Less wheel use, later waking, less interest in food. Each week's change is too small to notice and the trend over two months is obvious.

Bring the log to any appointment. It converts a vague description into a dated record, which is what shortens the route to a diagnosis.

What never to do

Never force a balled hedgehog open with your fingers or by rolling it. You will hurt it and you will lose its cooperation for months.

Never check a hedgehog on a table, a worktop or a sofa arm. They walk off edges.

Never bathe a hedgehog as part of a weekly routine. Bathing is occasional and problem-driven, and frequent bathing is the most common cause of the dry flaky skin owners then try to treat.

Never pick at crusts on the ears or dry skin. You will make an entry point for infection and you will destroy the sample a vet needs.

Never trim a nail you cannot see clearly, and never cut into the pink area inside it.

Never pull at a fibre wrapped tightly around a toe if the toe is swollen or discoloured. Go to a vet.

Never use human skin products, dog shampoos, tea tree oil or medicated creams on a hedgehog. Several are toxic and the animal will lick them.

Never treat for mites without a diagnosis. The look-alikes need entirely different treatment, and repeated inappropriate treatment delays the answer.

Never dismiss a weight drop because the hedgehog seems fine. In this species that combination is normal, and it is exactly why the scale is in the routine.

A check done well ends like this: the hedgehog unballed, unbothered, and willing to do it again next week.

Making the check easier over time

Hedgehogs learn by association, and the association you want is that being handled predicts something good and ends quickly.

Start with short sessions that stop before the hedgehog wants them to. Handle, check one thing, put it back. Build up.

Use scent. A worn t-shirt in the sleeping area makes your hands familiar, and a hedgehog that recognises your smell balls less.

Offer a favourite live insect after the check, not during it, so the sequence ends well.

Keep the same order every week. Predictability reduces the defensive response more than gentleness alone does.

If the hedgehog self-anoints during the check, contorting to spread frothy saliva over its spines, that is normal hedgehog behaviour in response to a new smell or taste, not distress.

If a hedgehog that previously tolerated handling becomes consistently defensive, treat that as a possible pain sign and book a check rather than assuming it has become grumpy.

What the vet will want

The weight log, with dates. The photographs, taken from the same angle over time. What you feed, including how many insects. The enclosure temperature measured where the hedgehog sleeps rather than on the room wall. The bedding type and when it was last changed. Wheel type and whether the hedgehog still uses it. What the droppings look like. When you first noticed each change.

Expect the vet to suggest sedation for anything requiring a proper look at the mouth, the feet or a painful area. In a species that balls, that is normal practice rather than an escalation, and it produces a far better examination than a struggle would.

When to get help

Go the same day for a hedgehog that is cold and unresponsive, cannot right itself, is breathing with effort, has not eaten for a night and a day, is bleeding, or has a swollen, dark or cold toe.

Book within the week for a falling weight trend, quill loss with abnormal skin, ragged ear edges, any lump, eye discharge or cloudiness, a smell from the mouth or dropped food, loose or green droppings, soiling around the vent, or a change in how it walks.

Book sooner rather than later for anything you have been photographing that is visibly larger than it was a fortnight ago. Growth over weeks is the finding, and it is the one that owners most often decide to watch for a little longer.