Ixodes pacificus is a species of tick commonly found along the western coast of North America. It primarily inhabits wooded and grassy areas, where it feeds on the blood of various mammals, birds, and reptiles. This tick is known for its role as a vector for diseases, including Lyme disease and anaplasmosis. Adult Ixodes pacificus ticks are typically active during the spring and fall, while nymphs are most active in the summer. They are small, with adults measuring about 2-3 mm in length. Proper precautions, such as wearing protective clothing and using insect repellent, can help reduce the risk of tick bites.