Bug Identifier
Dog Tick (American Dog Tick)
Community identification

Dog Tick (American Dog Tick)

Dermacentor variabilis

Order & Family
Order: Ixodida, Family: Ixodidae
Size
Unfed females are about 5mm long; fed females can expand up to 15mm (about the size of a small grape). Males correspond roughly to unfed female size.
See this bug in the Encyclopedia

Natural Habitat

Found in wooded areas, tall grasses, shrubs, and along trails or walkways; often brought indoors by pets.

Diet & Feeding

Hematophagous (blood-feeding); larvae and nymphs feed on small mammals like mice, while adults prefer larger hosts like dogs, cattle, and humans.

Behavior Patterns

They exhibit 'questing' behavior, waiting on the tips of vegetation with front legs oustretched to latch onto passing hosts. They are most active during the spring and summer months.

Risks & Benefits

Risks: Can transmit diseases such as Rocky Mountain spotted fever and tularemia; their bites can cause skin irritation or infection. Benefits: minimal, though they serve as a food source for some birds and reptiles.