American Dog Tick
Scientific Name: Dermacentor variabilis
Order & Family: Ixodida, Ixodidae
Size: 3.6 mm to 15 mm (unfed vs engorged)

Natural Habitat
Tall grass, woodlots, shrubby areas, and trails commonly frequented by mammals
Diet & Feeding
Obligate hematophagy; feeds on the blood of small mammals as larvae/nymphs and dogs or humans as adults
Behavior Patterns
Wait for hosts via 'questing' on vegetation; can survive for long periods without food through a complex three-host life cycle
Risks & Benefits
Major risk to humans as vectors for Rocky Mountain spotted fever and tularemia; no significant ecological benefits recorded for humans
Identified on: 6/10/2026