Bug Identifier
American Dog Tick
Community identification

American Dog Tick

Dermacentor variabilis

Order & Family
Order: Ixodida, Family: Ixodidae
Size
3 to 5 mm (unfed), growing up to 15 mm when engorged.
See this bug in the Encyclopedia

Natural Habitat

Found in areas with high grass and low-lying brush, particularly along paths and wooded edges.

Diet & Feeding

Hematophagous; they feed exclusively on the blood of mammals, including humans, dogs, and wildlife.

Behavior Patterns

They exhibit 'questing' behavior, where they climb vegetation and hold their front legs out to grab onto passing hosts. They have a three-host life cycle (larva, nymph, adult).

Risks & Benefits

They are a vector for several diseases, most notably Rocky Mountain spotted fever and tularemia. They can also cause tick paralysis in both pets and humans.