Dogs don’t show a bullseye rash. The most common sign is shifting-leg lameness, where your dog limps on one leg for a few days, then shifts to limping on a different leg. If you’ve been spending time outside with your dog in Hingham’s parks or wooded areas, watching for Lyme disease symptoms is important. Dogs are vulnerable to the same deer ticks that bite people, and they can fall ill with Lyme disease just like humans can. However, dogs don’t show the telltale bullseye rash, which can make detecting the disease trickier. Scarier still, symptoms often don’t appear until two to five months after the initial tick bite.