'A real life horror film': Terrified viewers watch from edge of their seats as SNAKES hunting as a pack chase down baby iguana in amazing footage for BBC's Planet Earth II that even shocked Sir David Attenborough

The most incredible footage. A wonderful wonderful programme which has taken years to make. For the first time in a long while, congrats to the BBC.

I never thought I would see the day I would be cheering an iguana on !

It was brilliant. Can't believe people were watching X Factor instead.

Brilliant bit of filming. BBC cameramen risking their lives to get amazing footage.. especially loved the iguana who appeared to have been caught, only to slip out of the clutches of the curling snakes and dodge numerous snapping mouths, to get to the top and safety ... phew !!! Nail biting

spectacular!! you forget how brutal and beautiful the animal kingdom is! did not disappoint.

Itvwas the snakes hunting in a large pack of a dozen or more and the ones waiting near the rocks so if the Iguana escaped the first pack the second would get them. Shocking but fascinating. How did the cameramen fare?

Awesome footage. Absolutely terrifying stuff. Especially for the iguanas

This is what i pay my fee for! Well done BBC!

Brilliant i was on the edge of my seat shouting for those Iguanas

Amazing footage, top drawer entertainment!!.

WHAT ABOUT THOSE FLEDGLINGS COVERED IN THOSE STICKY SEEDS? WHAT AWAY TO DIE

When that iguana got free from the snakes and made it to the rock safe haven. Our family front room broke out into cheer! Fantastic program.

I've seen more nature documentaries than I care to remember and thought I had seen it all. Well done BBC, Sir David Attenborough and the camera crews truly epic.

A very interesting programme, some great photography

There is very little quality Telly these days, but when the BBC get it right, they really get it right. This new series is looking extremely promising. Great stuff.

It had me, my husband and our little girl screaming at the tv for those poor iguanas!! It was like something out of walking dead (but faster) popping out of all the holes in the rocks chasing them...I didn't have nightmares but it's definitely something I won't forget!

There was one Iguana,who I labelled Houdini. It got caught but still managed to escape.

Nature is brutal, but this really was a piece of superb filming ... i was at the edge of my seat. Hats of to the BBC for this!

Watched this in absolute awe last night. What an incredible job the crew has

'Go iguana go!' was yelled more than once in our living room. Glad to hear they won't show any penguin deaths; that's always unbearable for me (the little one with the broken leg was bad enough!)