American Dog Tick
Scientific Name: Dermacentor variabilis
Order & Family: Ixodida, Ixodidae
Size: 3mm to 15mm depending on life stage and engorgement

Natural Habitat
Tall grass, low-lying brush, and wooded areas near paths
Diet & Feeding
Hematophagous; feeds exclusively on the blood of mammals including humans and dogs
Behavior Patterns
Uses 'questing' behavior to find hosts by waiting on vegetation with front legs outstretched. It has a life cycle consisting of four stages: egg, larva, nymph, and adult.
Risks & Benefits
Primary risk includes the transmission of Rocky Mountain spotted fever and tularemia; it can also cause tick paralysis in hosts. There are no known benefits to humans.
Identified on: 5/16/2026