I saw a baby with Ectrodactyly of all four limbs this morning, AKA Lobster claw deformity. It’s really rare to actually get to see it. Exact statistics vary, but some sources say its as rare as 1 in 90,000 live births. It’s one of those things I might never see again.
I can’t post a picture of the baby here, but it looks exactly like the picture from the Wikipedia article (above).