Causes & Health Information
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Risk of Bites
- Animal or human bites usually need to be seen. All of of them are dirty with saliva (spit) and can get infected.
Types of Wounds
- Bruising. There is no break in the skin. No risk of infection.
- Scrape (Abrasion) or Scratch. A wound that doesn’t go all the way through the skin. Low chance of infection. Antibiotic drugs are not needed.
- Laceration (cut). A wound that goes through the skin to the fat or muscle tissue. Some chance of infection. Most need to be seen. Cleaning the wound can help prevent this. Antibiotic drugs may be needed.
- Puncture Wound. Greater risk of infection. Puncture wounds from cat bites are more likely to get infected. Antibiotic drugs may be needed.
Types of Bites
- Bites from Wild Animals. Some wild animals can have rabies. Rabies is a disease that can kill people. Bites or scratches from any large wild animal can pass on rabies. Animals that may carry rabies are bats, skunks, raccoons, foxes, or coyotes. These animals may spread rabies even if they have no symptoms. In the U.S., 90% of cases of rabies in humans are caused by bats. Bats have spread rabies without a visible bite mark.
- Small Wild Animal Bites. Small animals such as mice, rats, moles, or gophers do not carry rabies. Chipmunks, prairie dogs, squirrels and rabbits also do not carry rabies. Sometimes, their bites can get infected.
- Large Pet Animal Bites. Most bites from pets are from dogs or cats. Bites from other pets such as horses can be handled using this guide. Dogs and cats are free of rabies in most cities. Stray animals are always at risk for rabies until proven otherwise. Cats and dogs that always stay indoors are free of rabies. The main risk in pet bites is wound infection, not rabies. Cat bites become infected more often than dog bites. Cat scratches can get infected just like a bite because cats lick their claws.
- Small Indoor Pet Animal Bites. Small indoor pets are at no risk for rabies. Examples of these pets are gerbils, hamsters, guinea pigs, or mice. Tiny puncture wounds from these small animals also don't need to be seen. They carry a small risk for wound infections.
- Human Bites. Most human bites occur during fights, especially in teenagers. Sometimes a fist is cut when it strikes a tooth. Human bites are more likely to become infected than animal bites. Bites on the hands are at higher risk. Many toddler bites are safe because they don't break the skin.
Animals at Risk for Rabies
- Bat, skunk, raccoon, fox, or coyote
- Other large wild animals
- Pets that have never had rabies shots and spend time outdoors
- Outdoor animals who are sick or stray
- Dogs or cats in countries that do not require rabies shots
- In the US and Canada, bites from city dogs and cats are safe.