WP The American dog tick tick. (American dog tick.) American dog tick The American dog tick American dog tick English Dermacentor variabilis The American dog tick English American dog tick English The American dog tick https://en.wikipedia.org/wiki/Dermacentor_variabilis Dermacentor variabilis English dermacentor ticks The American dog tick American dog tick The American dog tick American dog tick American dog tick Dermacentor variabilis