Darn! I knew there was something I had meant to watch Sunday night, instead of going out to eat, grocery shopping, etc.
The promos for that special were great.
I've had ultrasounds done on pregnant cats -- very interesting to see the babies as they develop. (We count spine lines and heads to determine how many kittens the mom is carrying.)
I'm sure National Geographic will be selling this on a DVD. No doubt they'll rerun it too at some time.