Ticks cannot jump or fly, but often climb grasses and shrubs in order to come in contact with people or animals walking by so they can attach themselves and feed on blood.
Ticks have the potential to transmit diseases such as Lyme disease. Most tick-borne diseases require the tick to be attached and feeding for several hours before the person gets infected. Tick bites are often painless at first and most people do not know they have been bitten so checking yourself and your pet for ticks immediately after being in an infested area is important.
Numerous species of ticks exist in the United States and worldwide, but not all species of ticks transmit disease. If you need assistance identifying a tick, try contacting your local health department or county extension office for assistance.
Control tips:
- Check yourself, your children and your pets regularly and remove any ticks you may find.
- When outdoors try to avoid contact with tall grasses and shrubs that may be harboring ticks.
- Wear closed-toed shoes and light-colored clothing so you can see ticks on your clothing. Tuck pant legs into socks to prevent ticks from finding your ankles.
- Consider using a tick repellent on exposed skin and clothing according to label directions. Many insect repellents are also effective against ticks. EPA's webpage, Find the Repellent that is Right for You, can help you select one that will meet your needs.
- Reduce the ticks in your yard by keeping leaf litter, tall grasses, shrubs and bushes away from areas you use regularly.
- Keeping deer and rodents out of your yard can help to reduce the number of ticks.
- If further tick control around your home is necessary, you may also consider treating your yard with pesticides designed to control ticks. Always read and follow label directions.
- Pets can bring ticks into your home. Consider talking to your veterinarian about the options for controlling ticks on your pets.
If you have questions about this, or any pesticide-related topic, please call NPIC at 800-858-7378 (8:00am - 12:00pm PST), or email us at npic@oregonstate.edu.
Last updated May 11, 2026
Ticks
- Confirm their identity. Ticks have 6 or 8 legs, no waist, and they cannot jump or fly.
- Check yourself and your pet for ticks often, especially when leaving a
potentially infested area.
- Wear light colored clothing to make ticks easier to spot.
- Tuck pant legs into socks or shoes to keep ticks from finding bare skin. If you find a tick remove it immediately and correctly. Save the tick for later identification.
- Stay in the center of trails to avoid tall grass where ticks may hide.
- Run clothing in the dryer using high heat to kill ticks.
- Remove debris, trim shrubbery and keep vegetation low in your yard.
- Create a barrier of bark mulch or gravel between lawns and tree lines.
- Move children's play equipment away from tree lines and put down bark
mulch.
- Deter wildlife, including rodents, which can bring ticks into your
backyard.
- Insect repellents have been recommended, if needed. If applying to children consider these precautions.
If you choose to use a pesticide, read the label before you buy. Try a lower toxicity
product first.
If you have a pesticide product in mind, have your label handy and click here for information about that product.
Common Ticks, Diseases, and Spatial Distribution
Affects:
humans
animals
wildlife
livestock
equines
| Species |
Region |
Diseases |
Who's Affected |
Learn More |
| American Dog Tick (Dermacentor variabilis) |
East of the Rocky Mountains |
Rocky Mountain Spotted Fever |
humans |
URI TickEncounter
TAMU TickApp
UMaine Extension
UFL IFAS
|
|
Tularemia |
humans animals |
| Asian Longhorned Tick (Haemaphysalis longicornis) |
Eastern U.S. |
Babesiosis |
animals |
TAMU TickApp
NE Regional Vector Center
USDA APHIS
UT VBD Watch
|
| possible vector:
Rocky Mountain Spotted Fever |
wildlife domesticated animals rarely humans |
| possible vector:
Heartland Virus |
wildlife domesticated animals rarely humans |
| possible vector:
Powassan Virus |
wildlife domesticated animals rarely humans |
Black Legged Tick (Ixodes scapularis)
(also see Western Black-legged Tick) |
Eastern U.S. (incl. northeast, midatlantic, and upper-midwest) |
Alpha-Gal Syndrome (less common) |
life-threatening allergy to humans |
URI TickEncounter
TAMU TickApp
UMN Entomology
UW Tick ID
|
|
Anaplasmosis |
humans |
|
Babesiosis |
animals rarely humans |
|
Ehrlichiosis |
humans |
|
Hard Tick Relapsing Fever |
humans |
|
Lyme Disease |
humans |
|
Powassan Virus (rare) |
humans |
| Brown Dog Tick (Rhipicephalus sanguineus) |
Throughout the U.S. and Hawaii (mainly southwest and U.S.-Mexico border; excl. AK) |
Rocky Mountain Spotted Fever |
dogs rarely humans |
URI TickEncounter
TAMU TickApp
UMaine Extension
|
|
Canine Babesiosis |
dogs |
|
Canine Ehrlichiosis |
dogs |
|
Ehrlichiosis |
humans |
| Cayenne Tick (Amblyomma cajennense) |
Southern Texas |
Rocky Mountain Spotted Fever |
humans animals |
URI TickEncounter
TAMU TickApp
|
|
Spotted Fever Rickettsioses (Rickettsia rickettsii) |
humans animals |
| Gulf Coast Tick (Amblyomma maculatum) |
Southeastern U.S. (incl. northeast, midwest, and southwest) |
Spotted Fever Rickettsioses (Rickettsia parkeri) |
humans animals |
URI TickEncounter
TAMU TickApp
OSU Extension
UMaine Extension
UFL IFAS
|
| Lone Star Tick (Amblyomma americanum) |
Northeast, South, and Midwest U.S. |
Alpha-Gal Syndrome |
life-threatening allergy to humans |
URI TickEncounter
TAMU TickApp
PA DEP
UW Tick ID
|
|
Bourbon Virus |
humans |
|
Ehrlichiosis |
humans |
|
Heartland Virus |
humans |
|
STARI |
humans |
|
Tularemia |
humans animals |
| Pacific Coast Tick (Dermacentor occidentalis) |
Oregon to Northern Baja California and Mexico |
Rocky Mountain Spotted Fever |
humans animals |
URI TickEncounter
CA CDPH
UC Davis
San Diego County
|
| Spotted Fever Rickettsioses (Rickettsia phillipii) |
humans |
|
Tularemia |
humans animals |
| Rocky Mountain Wood Tick (Dermacentor andersoni) |
Rocky Mountain States, NW Pacific Coast, SW Canada |
Colorado Tick Fever |
humans |
URI TickEncounter
Montana State University IPM
Montana FWP
CSU Extension
Nebraska NDA
|
|
Rocky Mountain Spotted Fever |
humans animals |
|
Tularemia |
humans animals |
|
Bovine marginale |
cattle only |
Western Black-legged Tick (Ixodes pacificus)
(also see Black Legged Tick) |
Pacific Coast (particularly northern CA; small sections of NV, AZ, UT; BC, Canada) |
Alpha-Gal Syndrome (less common) |
life-threatening allergy to humans |
URI TickEncounter
UC ANR IPM
USU Extension
Virginia Tech
|
|
Anaplasmosis |
humans |
|
Hard Tick Relapsing Fever |
humans |
|
Lyme Disease |
humans |
|
Powassan Virus (rare) |
humans |
| Winter Tick (Dermacentor albipictus) |
Throughout the U.S. and Alaska |
Skin irritant (no known disease pathogens) |
wildlife (especially moose) |
TAMU TickApp
UMaine Extension
OSU Extension
UNH Extension
|
|
Bovine marginale |
cattle / livestock |
| Cattle Tick & Southern Cattle Tick (Rhipicephalus annulatus and Rhipicephalus microplus) |
Rio Grande River, South Texas |
Cattle Fever / Texas Cattle Fever |
livestock domestic animals |
TAMU Cattle Tick
TAMU Southern Cattle Tick
USDA APHIS
TAHC Texas
Iowa State CFSPH
|
|
Bovine marginale |
cattle |
| Tropical Horse Tick (Dermacentor nitens) |
Southern Texas and Florida |
Equine Piroplasmosis |
equines (horses, asses, mules, zebras) |
TAMU TickApp
UI Extension
UMN Extension
PennState Extension (webinar)
|
|
Equine Anaplasmosis |
equines (horses, asses, mules, zebras) |
Additional Resources:
These images are graciously allowed to be used by NPIC by Bugwood.org. Images included in the Bugwood Network Image Archives (ForestryImages.org, IPMImages.org, Invasive.org, and InsectImages.org) are made available under a Creative Commons license. Individual photographers retain all rights to images included in the archive.
Tick Bite Prevention
Controlling Ticks
Biology of Ticks
Through its county agents, the Cooperative Extension Service gives individuals access to the resources at land-grant universities across the nation. These universities are centers for research in many subjects, including entomology (the study of insects) and agriculture. Each county within the United States has an Extension office, which is staffed with agents who work closely with university-based Extension specialists to deliver answers to your questions about gardening, agriculture, and pest control.