American Dog Tick

American Dog Tick

The tick is most commonly found on dogs, and readily attacks humans. It is of medical importance because it can carry Rocky Mountain spotted fever and cause tick paralysis.

  • Common Name: American Dog Tick
  • Scentific Name: Dermacentor variabilis (Say)
  • Class/Order/Family: Archnida/Acari/Ixodidae
  • Metamorphosis: Simple
  • Size


    Unengorged adult female about 3/16" long, male slightly smaller.

  • Color


    Brown with whitish to grayish markings often with a silvery hue.

  • Biology


    The engorged female drops off the host and seeks a sheltered place to lay her eggs.

  • Habit


    Does not survive well indoors.

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