I'm missing something that I was born with, and it's not what you are thinking right now.
I am missing a nail and first digit of one of my toes on my right paw. It was removed when I was 2 years old. I'll tell you how I came to lose it.
I was playing ball on a non-slip black mat at doggie daycare and I slid to get the ball. When I slid, my toenail tore away from the pad on my foot and was bleeding a lot. Mommy thought it would heal fine, but it still wasn't getting any better after a few days. I went to the vet and they cut the nail way down to the base in hopes that it would grow back normally. It didn't. So, I had to get the nail and first digit removed because the nail was growing back deformed and I was in pain every time I stood up.
After having the surgery I ended up getting 2 different infections and was put on antibiotics. The vet wanted to stop the infection before it got into the bone. If that had happened, I would have lost my leg too. I'm glad it didn't come to that.
This is how my foot looks now. It's just one less nail that Mommy has to cut.