Think about the teachers you loved and the teachers you hated. 5 degrees to 102 degrees is normal. Your pet will not suffer during the procedure, which consists of a single, painless injection. Dog health symptoms such as this may not be related to those nasty little parasites after all.
Think about two of your own conditioned responses.
For a dog sick dog the experience can be quite traumatic. Learn to have a healthy mix between letting your sick dog know that he is cared for and allowing him to rest and relax his way to getting better. These are all examples of warning signs that may accompany an illness and you may have to do some minor investigating.
It is often hard to notice this graying appearance because most people would assume this to be just a change in their dog's fur.