A black-legged tick poses on a leaf, waiting for an animal to brush up against it, so it may crawl on its new blood host. (For Spectrum Health Beat) They lie in wait in the tall grass, hoping to hop onto unsuspecting passersby. They’re just teeny-tiny ticks, but these dark-bodied bloodsuckers can pack a powerful—and potentially serious—punch. And this year, the ticks are out in full force, experts say. The season is expected to be an especially bad one for…