Bug Identifier
Dog Tick
Community identification

Dog Tick

Dermacentor variabilis

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

Natural Habitat

Found in areas with high grass or low-lying brush, particularly along walks and trails.

Diet & Feeding

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

Behavior Patterns

They are 'questing' parasites that wait on the tips of vegetation to latch onto passing hosts. They undergo a complex four-stage life cycle: egg, larva, nymph, and adult.

Risks & Benefits

Significant risk as a vector for diseases such as Rocky Mountain spotted fever and tularemia. They can also cause tick paralysis in dogs and humans. They provide no known ecological benefits to humans.