American dog tick

US /əˌmer.ɪ.kən ˈdɔːɡ tɪk/
UK /əˌmer.ɪ.kən ˈdɔːɡ tɪk/
"American dog tick" picture
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a species of tick (Dermacentor variabilis) found in North America, known for transmitting diseases like Rocky Mountain spotted fever and tularemia

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The hiker checked his legs for an American dog tick after walking through tall grass.
Preventing bites from the American dog tick is crucial in areas where Rocky Mountain spotted fever is prevalent.