•The average hedgehog weighs approximately ½ to 1-¼
pounds and most are the size of a softball or slightly larger when they are rolled into a ball.
•Some adult hedgehogs have a slightly larger build and can weigh up
to 2 pounds (the size of a small guinea pig) without being fat.
•Most hedgehogs are 6-8 inches in length, but it is hard toaccurately and consistently measure a hedgehog because their body changes shape when it is balled up, relaxed, sitting
•The most unique and obvious physical characteristic of hedgehogs is their spines.
•The weight of the spines accounts for approximately 35% of the hedgehog’s weight. (Miller)
speaking, hedgehogs have spines and not quills, but their unique hair is often referred to as quills.
hedgehog’s spines have solid shafts, whereas quills are hollow like a feather. Also, the hedgehog does NOT release its
spines as a form of defense, as a porcupine does its quills.
•Another contrast between a porcupine’s
quills is a hedgehog’s spines do NOT have barbs on the end that can stick in your skin like a porcupine’s quills.
•Hedgehogs do use their spines as their main line of defense by
erecting them so they criss-cross and point in different directions protecting the skin and body.
have an orbicularis muscle that it contracts like a drawstring when it rolls up into a ball.
hides its head and legs by creating a ball and using its spines as protection.
•Hedgehogs can puff of pop,
and if you are poked by an individual spine it can be painful.
•Proper handling techniques allow the hedgehog
to become relaxed and handled comfortably.
•Its spines will lay flat toward the tail when relaxed, and the
spines will feel relatively smooth when petted from front to back.
•There is a natural part in the spines on the forehead of the hedgehog.
•A hedgehog can raise
its forehead spines when it is nervous or mildly irritated. The furrow provides space for the raised spines so they point
forward instead of criss-crossing when the skin is pulled down over the eyes.
have 36-44 teeth in a long, pointy snout.
•The first pair of incisors is slightly larger than the rest, but
they are certainly not as dramatically different in size from their other
teeth as a rodent’s front teeth.
•Hedgehog incisors do not continuously grow, as do rodent incisors, and so they do not have an innate need to
chew or gnaw on things to wear down their teeth.
•The baby teeth are shed early and replaced by rooted adult
•Poor diet can cause tooth decay and gum disease.
•Hedgehogs have 4
toes on the rear feet and 5 toes on the front feet in the Atelerix species.
•The nails on the front feet may
need trimmed more frequently than the rear feet to prevent them from curling into the foot and damaging the footpad.
•Hedgehogs’ feet and toes are made for walking and running.
•They do not have opposable thumbs
or fingers for grasping or vertical climbing.
sexes have short, stubby tails that are usually hidden under their quills.
•The tail can be confused with
a penis because the tail curves toward the head when the hedgehog is placed on its back. The male’s penile sheath and
hidden penis are located mid-abdominally.
have soft, white fur on their face and bellies.
•They typically keep their fur clean and neat and a healthy
hedgehog should have no mats or caking of its fur.
•This small bump under the chin is
harmless and normal.
•It is often referred to as a “cutie mark.”
Atelerix species tends to have whitish or light colored faces, whereas the Algerian hedgehog has a darker face. Most hedgehogs
pets today are a hybrid of the two species and the very dark Algerian face masks are fairly rare.
spines or quills can range in color from an almost black band to a very pale peach color in the banding.
spines may be banded or solid white.
•Hedgehogs may actually change color variations as they mature and get
older. The best age to determine color is approximately one year.
•The International Hedgehog Association
and the Hedgehog Central Web site acknowledge more than 90 different colors of hedgehogs. These colors include various quill
colorations, as well as their snowflake and white varieties.
•Quill, skin, face, nose, and leg coloration
all come into play when determining the hedgehog’s true color.
•Many hedgehog enthusiasts simplify the
colors by placing hedgehogs in a few many categories such as standard (black to brown variations), cinnacot (tan or light
brown variations), black eyed whites (90% or more white quills), albinos, snowflakes (10-89% white quills), and pintos (any
color with patches of white quills).
•Hedgehogs do not have a scent gland like ferrets and,
therefore, do not have a particularly strong body odor.
•Hedgehog urine does not contain large amounts of
ammonia like a rabbit or a guinea pig.
•Male hedgehog urine is not stronger than female like male rats, mice,
•Hedgehogs do defecate and their feces do stink. What a hedgehog eats affects the feces odor. Wet
foods and certain brands of foods produce more of an odor than other foods.
•There are products available
(we sell Elimina) that are sprayed on the food or added to the drinking water that help combat odor internally.
cleaning and bedding choices are important parts of keeping hedgehog smell to a minimum.
Human Allergic Reactions
•There is always a possibility that someone can be allergic to hedgehogs.
•Dander is a common,
animal-related allergy for many people. Cat dander is produced when saliva is deposited on the fur during the self-cleaning
process. The dander turns into a fine dust. Hedgehogs are typically considered dander free, but they do self anoint, which
could be irritating to some people.
•Many people allergic to small animals are actually allergic to the bedding.
Most bedding is dusty, but hedgehogs can be housed on a variety of beddings that may help to eliminate a dust irritation.
•It is always a good idea to visit a hedgehog prior to purchase if you suspect you are allergic to other animals.
•It is possible to have red prickle marks on your hands after handling a hedgehog. I, personally, have gotten
these prickle marks several times throughout the years, but it certainly isn’t a consistent phenomenon.
long-time hedgehog owner shared with me her hypothesis that when hedgehogs are extremely scared, they can emit a toxin that
causes a reaction. While this certainly would explain my experiences, I have been unable to find further documentation on
the subject, and it is not a topic that regularly comes up with my customers.
•Another acquaintance told me
they had a hedgehog for quite some time when they suddenly developed sensitivity to their pet.
is 100% allergy-free!
all other animals, use their senses to gather information from their environment.
•One must take into consideration how hedgehogs use their senses when handling them and during the socialization
and bonding processes.
small, beady eyes and a poor sense of sight. This is probably due in part to their burrowing nature.
to humans, and even dogs and cats, hedgehogs have limited binocular vision.
◦They have a hard time with depth
perception and will often fall from dangerous heights because they simply cannot tell how far they are from the ground.
◦Other hedgehog senses are much stronger and overcompensate for this weakness.
◦Hedgehogs have large ears and have an excellent
sense of hearing.
◦Unfamiliar sounds or loud noises can cause hedgehogs to react in defense by huffing and
ducking their head in defense.
◦Hedgehogs can become accustomed to a busy household but it may take some
time to get used to new surroundings.
◦Hedgehogs have an excellent sense of smell
that is very useful to them in search of food and detecting danger.
◦Their nose is warm and moist and a curious
hedgehog will have their snout in the air sniffing in order to gather information from its environment. At the slightest threat
of danger (usually detected by noise or movement) they will duck their head for protection.
◦Hedgehogs are very good at detecting motion around them, even when they are rolled into a ball or cannot see.
◦Hedgehogs will often perceive movement as danger unless they
are completely relaxed with their surroundings.
hedgehog (or a hedgehog trying to go to sleep) may display their annoyance of movement around them even if they know the cause
of the movement.
◦For instance, if you are in the dark you can sense movement even if you cannot see what
is moving. A good example is a haunted house – you are naturally afraid when something moves close to you, until you
can distinguish between the unknown and a friend.
◦They will raise their quills when they sense movement
to protect themselves. They are naturally defensive until they are convinced they are safe.
◦It is human
nature to want to reach out and touch a hedgehog when it is sleeping or curled into a ball in its cage. What we might consider
touching, a hedgie considers a poke, and it will almost always raise its quills with a huff and a puff resulting in a prick
to the poking finger.
◦Proper handling can help prevent the automatic fear when being picked up.
◦Hedgehogs, like other animals, are able to sense the fear, nervousness, or confidence
of the humans handling them.◦Hedgehogs have a tendency to act more nervous if they sense you are nervous and will relax
more quickly if you are calm.
•Hedgehogs have a wide range of sounds that they use
•You must listen carefully and observe the
hedgehog’s behavior to clearly understand what your pet is trying to communicate.
can describe each noise that a hedgehog makes in different terms.
•Some sounds require little or no attention
on your part such as the squeaking or chirping of new babies. Other sounds such as clicking or popping should be a clear sign
to you that your hedgehog is in defense mode and you need to change how you are handling your pet.
this sound is often the first indication of new babies.
•Grunting - may be a sign of contentment.•Purring
or Whistling – sign of contentment. You know your hedgehog is truly enjoying your company when you hear this sound.•Singing-
strange sounds that are part of the mating ritual.•Huffing, Puffing, Sneezing - a sign of irritation, annoyance, or uncertainty.
Hedgehogs might huff and puff, but they will not blow your house down! They are simply trying to tell you to back off and
give them some space.
•Clicking or Popping - these sounds are the aggressive/defensive sounds that are made
when a hedgehog is trying to defend itself.
•Sneezing, Wheezing, Snuffling – certainly these sounds
can be a sign of illness but some hedgehogs are simply trying to have a hedgehog “conversation” with you or are
simply checking things out.
hear this sound when a fight is about to occur between two hedgehogs.◦It is a good idea to keep a close eye on the hedgies
because injuries can quickly occur during fights.
◦This sound is something that you never want to hear. It is a sound of pain or extreme fear.
or accidental injury can be causes for this sound.
◦Hedgehogs have been known to make this noise in their
sleep with no apparent cause as if they are having a hedgie nightmare.
live two to three years in the wild. The most common cause of death in the wild is due to predation rather than age.
•Hedgehogs can live up to 10 years in captivity, but those hedgehogs
are few and far between. A 10-year-old hedgehog would be similar to a 104-year-old grandma.
hedgehog is about 76 in people years, so if your hedgehog lives 5-7 years it has lived a full life but five years is longer
than the national average.
•According to the article “Mortality and Longevity, Update! Boys vs. Girls”
found in the September to December International Hedgehog Association Newsletter, “There is no statistical difference
in life expectancy between male and female hedgehogs. The average Hedgehog Lifespan is 38.5 months as of July 27, 2005.”
•Several things to consider when looking at longevity are diet, type of bedding, veterinary care,
environmental stressors, and genetics.
•The number one cause of hedgehog death is various forms of cancer.
•We hope that your hedgehog lives to a ripe old age but, unfortunately, not all pets live as long as others because
of the previously mentioned factors. We appreciate feedback from our customers so that we trace bloodlines. It is important
for us to know the parents of your hedgehog (from your receipt), as well as the cause of death of your pet if known.
Signs of Good Health
•Check its eyes to make sure they are bold, clear, round, and bright. The eyes should
be wide open. The eyes should not be watery or sunken, dull, or have any discharge.
nose should be moist and clean. It should not be dry, bubbly, or running.
•Your hedgehog’s ears should
be clean with no drainage, crustiness, or flaking on the outer part of the ear.
•Check the skin to make sure
there are no abrasions, lumps, bumps, excessive dryness, bare patches, or signs of mites.
•The underbelly fur should not be matted.
•The hedgehog’s body should be filled out through
the back and sides.
◦Some hedgehogs have a streamlined appearance,
but their skin should not be loose and they should be filled out below the ribs.
◦Other hedgehogs are plumper
but they should not be so fat that they cannot easily roll into a ball.
•Breathing should be regular with
no wheezing or signs of stress. Do not confuse the normal hedgehog huffing for the rattle of a respiratory illness.
•Notice the amount of food and water consumption from the previous night and has the hedgehog gained or lost a significant
amount of weight.
•The hedgehog’s bowl movements should be similar in color to the hedgehog’s
food. Green droppings or diarrhea are signs of illness and stress.
•Your hedgehog should move freely without
limping, wobbling, or dragging its feet. A hedgehog’s normal gait will create a “pitter-patter” sound.