you may find these pictures of a python in Australia interesting. The snake had to have an op after it went snacking on golf balls.
You may be interested in this story of two identical twins Elyse Schein and Paula Bernstein who were separated at birth.
The twins given up for adoption to separate families as part of an experiment in the US to discover how identical twins would react to being raised in different family backgrounds. Apparently the adoptive parents never new what had happened.
It wasn't until Schein started to investigate her birth that the full story started to appear.
"I received a letter that said: 'You were born on 9th October 1968 at 12.51 pm, the younger of twin girls.' It was unbelievable. Suddenly another element of my identity was revealed to me. Suddenly I was a twin."
The link tells you more of the story and is worth reading. I do find it disturbing that human beings should be subjected to an experiment in this way.