Be sure to get the tick completely out of the dog. If you're not sure about how to, take him to a groomer's or to the vet's and have them show you or do it for you. As for bathing, you will get a million different answers. I bathe my dog when he gets dirty. That's all. Even when he's covered in mud, I just let him swim in the lake and he's fine. Good luck and welcome to pet talk!