I've got a nice one down the right side of my upper lip right under my nostril. Back in 3rd or 4th grade, I went to a friends house, and it was rainy as hell, so his dog was inside... and this was a really protective dog that had never met me before. So my buddy goes to set our stuff in his room, and I'm standing in the kitchen, backed into a corner, and then... I blink, and I'm on the ground bleeding. Ripped straight through my lip, and a puncture under the right eye. The puncture is gone, but after 400 stitches, the lip is in the form of a permanent fat lip in the single spot, and a white line where no hair grows.
TL;DR Dog bite on my lip, tore through. There may be some other assorted ones, but if there are, they're unnoticeable.