I had to get a tick ( a grey one) off Dushka's neck tonight. It was well attached and there is a slight swelling that I treated with antiseptic. I used a pair of tweezers and the whole thing came off, dead already. I assume that was because she is Frontline treated. It was huge, but the blood sac was empty. Now my question is, should I get her an antibiotic injection in case the tick was on her long enough to give her something nasty? I can't find enough info on the web to make sense, only to keep cats protected with Frontline or similar, which I do.