I repeated the question of why God made ticks for Dr. Fish. He responded with a growl to what he took to be my facetious tone: "Nobody makes them. They're just there. Their object, like ours, is to make a living any way they can."
And the tick's place in the great web of life? "They transmit disease. They control population."
"Including us?" I asked.
"Whatever is susceptible to the disease."