Every time your dog bounds through the backyard or hits the trail with you, it may be returning with more than just muddy paws. Biologist Dr. Laura Ferguson of Acadia University and Dr. Katie Clow, a One Health researcher at the University of Guelph, are among the scientists watching a troubling trend: tick populations rising across North America, and our four-legged companions’ remarkably good ability at collecting them. But the threat doesn’t…