Animal and Human Bites
Animal and Human BitesSkip to the navigationTopic OverviewAnimal and human bites may cause puncture
wounds, cuts, scrapes, or crushing injuries. Most animal and human bites cause
minor injuries, and home treatment is usually all that is needed to care for
the wound. Animal bitesMost animal bites occur in school-age
children. The face, hands, arms, and legs are the most common sites for animal
bites. Since most bites occur in children, be sure to teach children to
be careful around animals and that an animal could hurt them. Young children
should always be supervised around animals. Dog bites occur more than any other animal bite and are most
frequent in the summer months. The dog is usually known to the person, and most
injuries result from the dog being teased or bothered while eating or sleeping.
Boys are bitten about twice as often as girls. The arms, head, and neck are the
most likely areas to be bitten in children. Cat bites usually cause deeper puncture wounds than dog bites
and have a high risk of bacterial infection because they can be hard to
clean adequately. Exotic pet bites, such as from rats,
mice, or gerbils, may carry illnesses, but
rabies is not usually a concern. The bites from some
pets, such as iguanas, are at risk for infection but do not carry other serious
risks. Livestock, such as horses, cows, and
sheep, have powerful jaws and can cause crushing bite injuries. Infection,
tetanus, and rabies are possible risks. Wild animal bites may occur while hunting,
camping, or hiking. Infection, tetanus, and rabies are possible risks. Human bitesAdult bites that cause a wound to the
hand can be serious. A clenched fist striking another person in the mouth and
teeth can cut or puncture the skin over the knuckles. This is commonly called a
"fight bite." Underlying tissues may be damaged, and an infection can
develop. Bites from children are: - Usually not very deep.
- Not as
forceful as adult bites.
- Not too likely to become
infected.
- Not damaging to underlying tissue.
What to do if you get a bite?When you have a bite: - Stop the bleeding by applying direct pressure.
- Determine if other tissues, such as
blood vessels, nerves, tendons, ligaments, joints, bones, or internal organs,
have been injured.
- Determine if treatment by a
doctor is needed.
- Clean the wound to prevent bacterial infections,
tetanus ("lockjaw"), and viral infections, such as
herpes simplex virus and
cytomegalovirus (CMV).
- Determine the risk
for
rabies and the need for treatment to prevent the
disease.
- Determine if you need a
tetanus shot.
Check your symptoms to decide if and when you
should see a doctor. Check Your SymptomsHave you been bitten by an animal or a human? How old are you? Less than 12 years Less than 12 years 12 years or older 12 years or older Do you have a deep wound in your neck, chest, or belly? A deep puncture wound in any of these areas could damage the internal organs. Yes Deep wound in neck, chest or belly No Deep wound in neck, chest or belly Are you having trouble breathing (more than a stuffy nose)? Yes Difficulty breathing more than a stuffy nose No Difficulty breathing more than a stuffy nose Do you have a bite on your face or head? Did a person bite you hard enough to break the skin? Yes Human bite breaks the skin No Human bite breaks the skin Do you have a cat bite that is more than just a scratch? Do you think that the bite may have been caused by abuse or neglect? Yes Bite may have been caused by abuse or neglect No Bite may have been caused by abuse or neglect How bad is the pain on a scale of 0 to 10, if 0 is no pain and 10 is the worst pain you can imagine? 8 to 10: Severe pain Severe pain 5 to 7: Moderate pain Moderate pain 1 to 4: Mild pain Mild pain Has the pain lasted for more than 8 hours? Yes Pain for more than 8 hours No Pain for more than 8 hours Is the pain getting worse? Do you have a wound on your arm, leg, hand, or foot that is more than just a scratch? For an arm or leg wound, is the skin below the wound (farther down the limb) blue, pale, or cold to the touch and different from the other arm or leg? This may mean that a major blood vessel was damaged and that blood is not reaching the rest of the arm or leg. Yes Skin is blue, pale, or cold below an arm or leg injury No Skin is blue, pale, or cold below an arm or leg injury For an arm or leg wound, is there any numbness, tingling, or loss of feeling around the wound or below the wound (farther down the arm or leg)? This may mean that a nerve was damaged. Yes Numbness, tingling, or loss of feeling around or below an arm or leg injury No Numbness, tingling, or loss of feeling around or below an arm or leg injury Can you move the area below the injury normally, even though it may hurt? Yes Able to move limb normally below injury No Unable to move limb normally below injury Do you have a bite on your hand or foot? Is the bite deep or gaping open? Do you have a bite over a joint, such as the ankle, knee, or elbow? Do you think you may have a fever? Do you have diabetes, a weakened immune system, peripheral arterial disease, or any surgical hardware in the area? "Hardware" includes things like artificial joints, plates or screws, catheters, and medicine pumps. Yes Diabetes, immune problems, peripheral arterial disease, or surgical hardware in affected area No Diabetes, immune problems, peripheral arterial disease, or surgical hardware in affected area Are there red streaks leading away from the area or pus draining from it? Is there any swelling or bruising? Did the swelling happen within 30 minutes after the bite? Yes Swelling occurred within 30 minutes of bite No Swelling occurred within 30 minutes of bite Is the swelling over a joint, such as the ankle, elbow, or hip? Yes Swelling is over a joint No Swelling is over a joint Has swelling lasted for more than 2 days? Yes Swelling for more than 2 days No Swelling for more than 2 days Are you worried about getting rabies? Did a wild animal, a livestock animal (like a horse), or an exotic pet (like a ferret, parrot, or turtle) bite you? Yes Bite from wild animal, livestock animal, or exotic pet No Bite from wild animal, livestock animal, or exotic pet Were you able to clean the wound well? You may not be able to clean the wound if it is deep, hurts too much, or has an object stuck in it. Yes Able to adequately clean wound No Unable to adequately clean wound Is the cut or wound more than 0.25 in. (0.6 cm) deep and 0.75 in. (2.0 cm) long with sides that gape open? Wounds like this often need stitches. If you need stitches, it's best to get them within 8 hours of the injury. Yes Cut more than 0.25 in. (0.6 cm) deep and 0.75 in. (2.0 cm) long with sides that gape open No Cut more than 0.25 in. (0.6 cm) deep and 0.75 in. (2.0 cm) long with sides that gape open Are you having any other problems that may be related to the bite? Yes Other problems related to bite No Other problems related to bite Many things can affect how your body responds to a symptom and what kind
of care you may need. These include: - Your age. Babies and older
adults tend to get sicker quicker.
- Your overall health. If you have a condition such as diabetes, HIV, cancer, or heart
disease, you may need to pay closer attention to certain symptoms and seek care
sooner.
- Medicines you take. Certain
medicines, herbal remedies, and supplements can cause symptoms or make them
worse.
- Recent health events, such as surgery
or injury. These kinds of events can cause symptoms afterwards or make them
more serious.
- Your health habits and lifestyle, such as eating and exercise habits, smoking, alcohol or drug
use, sexual history, and travel.
Try Home TreatmentYou have answered all the questions. Based on your answers, you may be
able to take care of this problem at home. - Try home treatment to relieve the
symptoms.
- Call your doctor if symptoms get worse or you have any
concerns (for example, if symptoms are not getting better as you would expect).
You may need care sooner.
Symptoms of infection may
include: - Increased pain, swelling, warmth, or redness in or
around the area.
- Red streaks leading from the area.
- Pus draining from the area.
- A fever.
Pain in adults and older children - Severe pain (8 to 10): The pain
is so bad that you can't stand it for more than a few hours, can't sleep, and
can't do anything else except focus on the pain.
- Moderate pain (5 to 7): The pain is bad enough to disrupt your
normal activities and your sleep, but you can tolerate it for hours or days.
Moderate can also mean pain that comes and goes even if it's severe when it's
there.
- Mild pain (1 to 4): You notice the pain,
but it is not bad enough to disrupt your sleep or activities.
Pain in children under 3 years It can be hard to tell how much pain a baby or toddler is in. - Severe pain (8 to 10): The
pain is so bad that the baby cannot sleep, cannot get comfortable, and cries
constantly no matter what you do. The baby may kick, make fists, or
grimace.
- Moderate pain (5 to 7): The baby is
very fussy, clings to you a lot, and may have trouble sleeping but responds
when you try to comfort him or her.
- Mild pain (1 to 4): The baby is a little fussy and clings to you a little but responds
when you try to comfort him or her.
With severe bleeding, any of these may
be true: - Blood is pumping from the wound.
- The
bleeding does not stop or slow down with pressure.
- Blood is quickly soaking through bandage after bandage.
With moderate bleeding, any of these may
be true: - The bleeding slows or stops with pressure but
starts again if you remove the pressure.
- The blood may soak through
a few bandages, but it is not fast or out of control.
With mild bleeding, any of these may be
true: - The bleeding stops on its own or with
pressure.
- The bleeding stops or slows to an ooze or trickle after
15 minutes of pressure. It may ooze or trickle for up to 45 minutes.
Symptoms of difficulty breathing can range from mild to severe. For example: - You may feel a little out of breath but still be able to talk (mild difficulty breathing), or you may be so out of breath that you cannot talk at all (severe difficulty breathing).
- It may be getting hard to breathe with activity (mild difficulty breathing), or you may have to work very hard to breathe even when you’re at rest (severe difficulty breathing).
You may need a tetanus shot depending
on how dirty the wound is and how long it has been since your last shot. - For a dirty wound that has
things like dirt, saliva, or feces in it, you may need a shot if:
- You haven't had a tetanus shot in the past 5
years.
- You don't know when your last shot was.
- For a clean wound, you may
need a shot if:
- You have not had a tetanus shot in the past 10
years.
- You don't know when your last shot was.
Rabies may be a concern after an
animal bite if: - The animal that bit you was acting strangely or
foaming at the mouth.
- The animal attacked you for no clear reason.
- The animal cannot be watched for signs of rabies.
- You
were bitten while you were in a foreign country or in the wilderness.
To clean a wound well: - Wash your hands first.
- Remove large
pieces of dirt or debris from the wound with cleaned tweezers. Do not push the
tweezers deeply into the wound.
- Hold the wound under cool running
water. If you have a sprayer in your sink, you can use it to help remove dirt
and other debris from the wound.
- Scrub gently with water, a mild
soap, and a washcloth.
- If some dirt or other debris is still in
the wound, clean it again.
- If the wound starts to bleed, put
direct, steady pressure on it.
If a chemical has caused a wound or burn, follow the instructions on the chemical's container or call Poison Control (1-800-222-1222) to find out what to do. Most chemicals should be rinsed off with lots of water, but with some chemicals, water may make the burn worse. Certain health conditions and medicines weaken the immune system's ability to fight off infection and
illness. Some examples in adults are: - Diseases such as diabetes, cancer, heart disease,
and HIV/AIDS.
- Long-term alcohol and drug
problems.
- Steroid medicines, which may be used to treat a variety
of conditions.
- Chemotherapy and radiation therapy for
cancer.
- Other medicines used to treat autoimmune
disease.
- Medicines taken after organ transplant.
- Not
having a spleen.
Seek Care TodayBased on your answers, you may need care soon. The
problem probably will not get better without medical care. - Call your doctor today to discuss the symptoms
and arrange for care.
- If you cannot reach your doctor or you don't
have one, seek care today.
- If it is evening, watch the symptoms and
seek care in the morning.
- If the symptoms get worse, seek care
sooner.
Seek Care NowBased on your answers, you may need care right away. The problem is likely to get worse without medical care. - Call your doctor now to discuss the symptoms and
arrange for care.
- If you cannot reach your doctor or you don't have
one, seek care in the next hour.
- You do not need to call an
ambulance unless:
- You cannot travel safely either by driving
yourself or by having someone else drive you.
- You are in an area
where heavy traffic or other problems may slow you down.
Call 911 NowBased on your answers, you need
emergency care. Call911or other emergency services now. Put direct, steady pressure on the
wound until help arrives. Keep the area raised if you can. Call 911 NowBased on your answers, you need
emergency care. Call911or other emergency services now. Home TreatmentMinor animal and human bites
usually can be treated at home. If you do not have an increased chance of
getting an infection, do not have other injuries, and do not need treatment by
a doctor or a tetanus shot, you can clean and bandage a bite at home. Treat bleedingStop the bleeding with direct pressure to the wound. After you have stopped the bleeding, check your
symptoms to determine if and when you need to see your
doctor. Clean the woundClean the animal or human bite as
soon as possible to reduce the chance of infection and scarring. - Wash the wound for 5 minutes with large amounts
of clean water.
- Don't use rubbing alcohol,
hydrogen peroxide, iodine, or Mercurochrome, which can harm the tissue and slow
healing.
Some bites cause only bruising (contusions) at the bite site
but do not break the skin. These bites usually do not become infected. Stitches, staples, or skin adhesives (also called liquid skin)Determine whether your bite needs to be treated by a doctor.
Bites may need to be closed with sutures, staples, or skin adhesives so that
they won't leave a large scar. Bites to the hand are not usually closed because
closing the bite wound may increase your chance of having an infection. Cat
bites are rarely closed because they are usually no larger than a puncture. Your doctor
will tell you how to
take care of your stitches or staples and when to
return to have them removed.
Skin adhesives usually do not need to be removed, but your doctor may wish to
see you to check on the wound. Be sure to carefully follow your doctor's
instructions. If you are unsure of how to care for your wound or have
questions, call your doctor for instructions. Consider applying a bandageMost bites heal well and
may not need a bandage. You may need to protect the bite from dirt and
irritation. Be sure to clean the bite thoroughly before bandaging it to
reduce the risk of infection occurring under the bandage. - Select the bandage carefully. There are many
products available. Do not use liquid skin bandages and moisture-enhancing
bandages unless your doctor tells you to. These types of dressings may seal in
bacteria that could cause an infection.
- If you use a cloth-like
bandage, apply a clean bandage when your bandage gets wet or soiled. If a
bandage is stuck to a scab, soak it in warm water to soften the scab and make
the bandage easier to remove. If available, use a nonstick dressing. There are
many bandage products available. Be sure to read the product label for correct
use.
- Watch for
signs of infection. If an infection develops under a
bandage, a visit to your doctor may be needed.
- Petroleum jelly, such as Vaseline,
will keep the bandage from sticking to the wound. Apply a thin layer of petroleum jelly to
the wound.
- Use an
adhesive strip to hold the edges of a wound together. Always put an adhesive
strip across a wound to hold the edges together, not lengthwise. You can
make a butterfly bandage at home or purchase one to help hold the skin edges
together.
Tetanus- Determine whether you need a
tetanus shot.
- You may have a localized
reaction to a tetanus shot. Symptoms include warmth, swelling, and redness at
the injection site. A mild fever may occur. Home
treatment can help reduce the discomfort.
Pain reliefAn
ice or cold pack may help reduce swelling and bruising. Never apply ice
directly to a wound or the skin. This could cause tissue damage. Elevate the injured area on pillows while applying ice and anytime you
are sitting or lying down. Try to keep the area at or above the level of your
heart to reduce swelling. Medicine you can buy without a prescription Try a nonprescription
medicine to help treat your fever or pain: |
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Talk to your child's doctor before switching back and
forth between doses of acetaminophen and ibuprofen. When you switch between two
medicines, there is a chance your child will get too much medicine. | Safety tips Be sure to follow
these safety tips when you use a nonprescription medicine: |
---|
- Carefully read and follow all
directions on the medicine bottle and box.
- Do not take more than
the recommended dose.
- Do not take a medicine if you have had an
allergic reaction to it in the past.
- If
you have been told to avoid a medicine, call your doctor before you take
it.
- If you are or could be pregnant, do not take any medicine other
than acetaminophen unless your doctor has told you to.
- Do not give aspirin to anyone younger than age 20 unless your doctor tells you to.
| After the biteMany states require that animal
control authorities be notified of animal bites. Even if your state law does
not require you to report animal bites, you may wish to call animal control to
report the bite. They can help you determine whether the animal that bit
you: - Has been properly vaccinated.
- Needs
to be observed for signs of illness. A healthy pet that has bitten someone
should be confined and observed for 10 days to see whether it develops symptoms
of rabies.
- Is a rabies carrier in your area and whether you need to
be vaccinated to prevent
rabies.
- Is a danger to others.
If you are unable to find a phone number for animal control
in the front pages of the telephone book, contact the police or sheriff's
office for the number. Symptoms to watch for during home treatmentCall your doctor if any of the following occur during home treatment: - Signs of infection
develop.
- Signs of loss of function develop.
- Pain gets worse.
- The wound does not
heal.
- Symptoms become more severe or more frequent.
PreventionThe following tips may help prevent bite
injuries. Animals- Do not disturb animals, even your family pets,
while they are eating, sleeping, or nursing. Animal mothers can be very
aggressive when protecting their young.
- Never leave a young child
or baby alone with a pet.
- Do not approach or play with unfamiliar
or stray pets.
- Teach children to ask permission from a pet's owner
before petting the animal. Do not pet an animal without first letting it sniff
you.
- Don't run past a dog, because dogs naturally love to chase and
catch things.
- Many animals give a warning sign before they attack.
If you have animals in your home, know their warning signs and teach them to
your children.
- Do not try to separate fighting animals. If
available, water sprayed from a hose will often break up the
fight.
- If you see a threatening dog:
- Stay still. Do not run.
- Do not
make direct eye contact with the dog or stare at the dog. Staring at a dog may
be interpreted by the dog as a threat and aggression.
- Don't scream.
If you say anything, speak calmly and firmly.
- If you fall or are
knocked to the ground, curl into a ball with your hands over your head and
neck. Protect your face.
- Notify animal control and, if possible,
speak with the dog's owners.
- Tell children to report an animal bite to an
adult immediately.
- Do not keep wild animals as pets.
- Do
not touch or tease wild animals.
- Do not handle sick or injured
animals or animals that are acting strangely.
- Get help from animal
control personnel if you need to rescue a trapped or injured animal. If no help
is available, wear the heaviest gloves and clothing you have. Do not move
quickly when approaching the animal, and talk in a low, gentle voice to
reassure the animal.
Choose and care for your pets wisely- Do not buy a pet on impulse. Do some research
and learn about how different types of pets act and what their needs are. Ask a
veterinarian or your local humane society for more
information.
- Keep your animals healthy. Regular examinations and
vaccinations are important for their health and for yours.
Vaccinate pets against rabies and other
diseases.
- Promote attitudes of animal love and respect. Do not
tolerate any form of animal abuse or cruelty.
- Obedience-train your
dogs. If you have children, involve them in the training so they can handle and
learn respect for their companion animals. Keep pets on a leash in public
areas.
- Do not allow your pets to roam free. Fence your yard, and
keep your pets on a leash in public areas.
- Contact your local
humane society or shelter about workshops for your school or service group that
teach about animal care.
Human bites- Prevent human bites by controlling behavior
that may lead to fights or abuse. For more information, see the topic
Anger, Hostility, and Violent Behavior.
- Teach your child not to bite. Biting most commonly occurs when
many children are together, such as in child care centers. Most of the time,
biting can be reduced by proper supervision and by helping children express
their feelings in more appropriate ways. For more information, see the topic
Biting.
Preparing For Your AppointmentTo prepare for your appointment, see the topic Making the Most of Your Appointment. Questions to prepare for your appointmentYou can help your
doctor diagnose and treat your condition by being prepared to answer the
following questions: - When did the bite occur?
- Where were
you when the bite occurred?
- How did the bite occur? Describe what
happened.
- Were you bitten by a domestic pet or a wild animal?
- Do you know the animal, or was it a
stray?
- Was the animal acting strangely?
- Is the animal
safely secured?
- Have you notified your local animal control
department?
- Was the bite provoked?
- What are your
main symptoms?
- What home treatment measures have you tried? Did
they help? Be sure to include any nonprescription medicines you have taken or
used. Did they help?
- When was your last
tetanus shot?
- Do you have any
health risks?
CreditsByHealthwise Staff Primary Medical ReviewerWilliam H. Blahd, Jr., MD, FACEP - Emergency Medicine Adam Husney, MD - Family Medicine Kathleen Romito, MD - Family Medicine Specialist Medical ReviewerH. Michael O'Connor, MD - Emergency Medicine Martin J. Gabica, MD - Family Medicine Current as ofMarch 20, 2017 Current as of:
March 20, 2017 Last modified on: 8 September 2017
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