Wood Ticks

Also known as American Dog Tick

Facts, Identification & Control


As arachnids, mature wood ticks (Dermacentor andersoni) have four pairs of legs that allow them to crawl efficiently through their surroundings and the hair or fur of their hosts. Male wood ticks are identifiable by mottled gray coloration along their backs. Females bear almost completely gray coloration behind their heads.

Adult females measure approximately 5 mm in length and males about 3.6 mm. They both have grayish patterns on their bodies. However, following a feeding, females may grow to 1.5 cm in length.


The American dog tick is also known as the wood tick and is common wherever domestic animals or livestock dwell. They also thrive in locations where plants, bushes and grasses are accessible to humans. They are found in wooded or grassy areas and may also be referred to as Rocky Mountain wood ticks.

Life Cycle

Adult females detach themselves from their hosts in order to locate suitable locations for egg laying. Inside, engorged female ticks are often found in potted plants. They are also common beneath fallen leaves in gardens. One female American dog tick is capable of laying 5,000 eggs in a single batch.

After larvae emerge from eggs, they go in search of small hosts, such as mice. They also feed until they become engorged and then drop to the ground to develop into nymphs. In ideal temperatures and climates, American dog ticks may develop fully within three months. However, in less ideal environments, their development may span up to two years.

Wood ticks are known to be transmitters of tularemia, Rocky Mountain spotted fever and Colorado tick fever. These diseases are passed on through the bite of these arachnids.

Prevention Tips

Because they are unable to fly, wood ticks situate themselves near areas frequented by their preferred hosts. They then latch onto the passing animal and begin to feed. In order to avoid wood tick infestations, keep grass around the home well trimmed. Inspect pets and people carefully after outings.

If you locate a feeding tick, remove it from the victim with tweezers or forceps. Do not squeeze the body of the tick, as this may further transmit harmful bodily fluids. It is also imperative that the mouthparts of the tick be completely removed from the bite site.

Difference between Deer Ticks and Wood Ticks