The American dog tick is a common tick species found in the United States, particularly in grassy and wooded areas. It is known for its reddish-brown color and can grow up to half an inch in size. These ticks are most active in the spring and summer months, seeking hosts like dogs and humans to feed on. American dog ticks can transmit diseases, including Rocky Mountain spotted fever and tick-borne encephalitis. To prevent bites, it is important to wear protective clothing and use insect repellent when spending time outdoors. Regularly checking for ticks after outdoor activities can help reduce the risk of tick-borne illnesses.