Ticks, are irritating arthropods that prey on dogs. Their goal in life is to find a warm-blooded creature so that they can feed. Veterinarians and pet owners have been battling these tiny parasites for decades and the war continues.
Ticks are members of the Acarina order and are not insects. Ticks and mites are in a class all by themselves. In the transmission of disease, mosquitoes and ticks are the primary concern, with ticks being the most important.
Ticks are divided into 3 different families. Only 2 of these families are present in the US, the Ixodidae (hard tick) family and the Argasidae (soft tick) family. Within the Ixodidae, there are about 60 different species that have been reported in the US. Within the Argasidae family, there are about 20 reported US species.
There are 4 stages in the life cycle of a tick: egg, larva, nymph and adult. This life cycle can be completed within 2 months. The larvae, nymph and adults all feed on blood and after a feeding, the tick falls from the feeding source and the larva will molt to a nymph, the nymph will molt to an adult and the female adult will lay eggs. Male ticks ingest far less blood than females.
When ticks are in need of a blood meal, they seek out prey by heat sensors. When a warm object passes by them, they attach to this object by clinging to clothing or fur or falling from trees onto the object. Dogs are a common target for ticks.
After the prey has been chosen, the tick migrates to an area that has little hair or does not present difficulty in feeding (the ears and skin around the ears or lips are common places). The tick inserts its pincher-like mouthparts into the skin and begins feeding. These mouthparts are locked in place and will only dislodge when the tick has completed the meal. Once the meal is complete, the adult female will fall from the prey and seek shelter. Eggs are born and the adult female dies.
Many methods have been tried to remove ticks, many of which are not recommended. Applying a recently extinguished match or even a still lit match to the body of the tick will NOT cause the tick to back out and fall off. The mouthparts only let go when the tick has completed the meal. Also, applying fingernail polish will suffocate the tick but will not cause the tick to fall off.
Tick Control and Prevention
Control and prevention of ticks is extremely important in reducing the risk of disease associated with ticks. This includes removing the ticks as soon as possible and trying to prevent attachment.
Tick avoidance requires avoiding environments that harbor them. Extra care should be taken in the woods and areas with tall grass or low brushes. When traveling, be aware that certain areas of the country have a much higher incidence of ticks (i.e. the northeast). In addition, since they can be carried unknowingly from one place to another on clothing or the body, it is always possible for an individual or animal to come into contact with a tick.
Ticks may be killed by spraying, dipping, bathing, or powdering, or applying topical medications to affected individuals with appropriate tick-killing products. Tick collars or products applied topically may act to prevent attachment of new ticks and to promote detachment of ticks already attached.
There are many products on the market that control ticks. Some are over the counter; others are prescription, only available through your veterinarian. Whether one purchases an over the counter or prescription product, it is a good idea to consult your veterinarian first.
Some of the safest and most effective products that your veterinarian may recommend include topical spot-on products and certain tick collars. Topical spot-on products are generally applied on the skin between your pet’s shoulders once a month. Some are effective against other parasites as well (i.e. fleas, internal parasites). Systemic topical products include K9 Advantix® (imidacloprid + permethrin), Frontline® and Frontline Plus® (fipronil with or without methoprene, an insect growth regulator), Revolution® (selamectin), and Kiltix® (permethrin). An effective tick collar for dogs is the Preventic® and Preventic Plus® (amitraz with or with out pyriproxifen, an insect growth regulator). Tick products for dogs should NEVER be used on cats because severe toxicity and death may occur.