You need a special tool that you can buy from a pet shop or online. Someone has posted video and lots of information on here about a month ago. Do not try to remove it without knowing what you are doing as you need to remove the entire tick and it has parts buried in your dog. It isn't going to do much more harm to leave it until you can get to the vet, or petshop, tomorrow morning. I was totally freaked when I first found one but fortunately I had read the posts, seen the video and bought the tool - it was easy in the end. Is it alive? If you use Frontline it should be dead and it definately won't hurt to leave it there. If it is alive, when you remove it make sure you kill it! Good luck xx