Hello all - We just came to pick up Jersey from my inlaws' house on our way back from the airport, and when she was rolling around on the carpet in joy I noticed a mark on her inner thigh. More specifically, it's a "bullseye" mark - a small reck pock with a perfect concentric red ring around it. In humans, this is a hallmark sign of Lyme's Disease, and the New Jersey suburb she was running around does have deer and ticks. She gets Frontline Plus once a month, but the area where to bite is was where her fur is almost non-existent. I'm going to take her to the vet tomorrow, but I was curious if anyone had a similar experience, or can offer advice for proper prevention/treatment of the disease. My understanding is that the bullseye mark is rare in dogs (more common in humans), so for that matter, could this be something else? Thanks for your help and advice in advance!