when my beloved and deceased Daisy was just a puppy, she was behaving like a bad puppy wanting to jump out the door after me when I went to get out of the car. As I slammed the door in disgust and starting to walk away I heard this yelping. I looked back at the car, and (OUCH) part of the tail was sticking out the closed door!

Fortunately she suffered no ill effects from her mean daddy dog, and held her tail up high proudly for the 10+ years that followed. It took me years to get over that guilt trip.