I can tell you two things not to do:

1) If the dog is barking like crazy on a dark night don't come up beside the dog and face the same direction it is. If you do, and the flashlight picks up a pink quivering ring about the size of a dime, it's probably too late...

2) Don't do like the neighbor kid did (it wasn't me - honest!) and shoot one with a bow, especially about a 20 pound bow with field points...