Dog Tick is the most common carrier of Rocky
Mountain Spotted Fever in the Eastern USA, and is also able to transmit hunter's disease (tularemia). Widespread
throughout the USA, and parts of Canada and Mexico, it is also occasionally responsible for tick paralysis. A three
host tick, it prefers rodents and similar small animals during its larval and nymph stages, but graduates to dogs
and humans as an adult.
The Rocky Mountain Wood Tick is
a common carrier of Rocky Mountain Spotted Fever in northwestern U.S. and Canada, the Colorado tick fever virus,
and the bacteria which causes hunter's disease (tularemia). It is also commonly responsible for tick paralysis
in humans, livestock, and wild mammals. A three host tick, as a larva and nymph it focuses on rodents, but as an
adult prefers deer, dogs and similar animals, livestock, and humans.
The Western Black-Legged Tick is
a carrier of Lyme Disease and equine granulocytic ehrlichiosis. Found in Western USA and B.C. A three host tick,
it feeds primarily on rodents and lizards in its larval and nymph stages, but prefers large mammals such as deer,
dogs, horses, and humans as an adult. Lyme disease is recognized by its distinctive "bulls eye rash."
However, other bites from this tick may become inflamed and slow to heal due to an allergic reaction to tick saliva.