any of a variety of ticks, as the American dog tick, that commonly infest dogs and may transmit Rocky Mountain spotted fever or tularemia to humans.
Origin of dog tick
First recorded in 1545–55
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Examples from the Web for dog tick
Historical Examples of dog tick
Both the dog-tick and the American tick before mentioned, especially the latter, also infest the horse.An Introduction to Entomology: Vol. I (of 4)