I love this picture of Zack and Buddy. They both look so happy, knee deep in the lake. (Do dogs have knees?)
If you click to enlarge the picture you can see that Buddy is missing one of his lower canines. He's also missing his upper canine on the opposite side. He was "snaggle-tooth" when we adopted him from the shelter. Our vet suspects he was not "perfectly suitable" for breeding or showing, and was surrendered by his owners. Honestly, would you have noticed it if I hadn't pointed it out?
If you're like me, you're too busy looking at his beautiful brown eyes to notice a couple of missing teeth. As you can see, missing a couple teeth hasn't hindered him at mealtime.