by Deebz » Wed Dec 19, 2012 2:34 pm
That sounds about right... It's basically the same thing as conjoined twins, except that for whatever reason the 1 twin didn't develop fully and got mostly absorbed like Kellory says. It can also be caused by an embryo beginning to split into two (the way identical twins form), but the split is incomplete.
This is probably more common than we really know about since deer have twins so often. It shows up in humans even quite a bit. I actually dated a girl when I was in high school that had a cyst removed from her abdomen when she was in 2nd grade. I guess the cyst was roughly the size of a softball, and when they biopsied it they found teeth and hair inside...
"When a hunter is in a tree stand with high moral values and with the proper hunting ethics and richer for the experience, that hunter is 20 feet closer to God." ~Fred Bear