Womb animals
Using a combination of three-dimensional ultrasound scans, computer graphics and tiny cameras, the team were able to show the entire process from conception to birth.
Read more ---> http://www.dailymail.co.uk/news/article-417909/The-remarkable-close-pictures-animals-womb.html
Info about the scans ---> http://www.youtube.com/watch?v=HFxxvYII0VA
The making of 'In the Womb: Animals' ---> http://www.youtube.com/watch?v=aMEVam3xWq4