Dermacentor variabilis
 Dermacentor variabilis also known as the American dog tick or Wood tick is a species of tick that is known to carry bacteria responsible for several diseases in humans including Rocky Mountain spotted fever and tularemia (Francisella tularensis). It is one of the most well-known hard ticks. Diseases are spread when it sucks blood from the host which could take several days for the host to experience some symptoms.Though D.