''Life in Cold Blood'' is a BBC/Animal Planet co-production, a Natural History documentary on reptiles and amphibians, presented by Creator/DavidAttenborough. It was broadcast in 2008 [[BritishBrevity and ran for only five episodes]]. The premise of the programme was to explore the diverse world of reptiles and amphibians using the latest in photographic technology, and until ''First Life'' was made in 2010 this was the last chapter in David Attenborough's Life series.

Each episode, besides the first introductory one, dealt with a particular group of reptiles/amphibians; the second episode concentrated on the amphibians, the third on lizards, the fourth on snakes and the fifth on crocodilians and turtles.

!!This programme contains examples of:

* BadassAdorable: Some of the monitor lizards count - they look wide-eyed and expectant, but remember one can '''outrun a rabbit''' and kill it. Also, the baby crocodiles.
* BelligerentSexualTension: The female flat-lizards do not take kindly to the interests of the males during feeding time.
* CeilingCling: Geckos are experts at this.
* ChekhovsGun: The gopher tortoise's burrows often lodge other animals looking for an easy place to stay. This proves useful when a forest fire sweeps by above, forcing animals to take refuge in the underground chambers until the flames have passed.
* CoolOldGuy: David Attenborough
* CozyVoiceForCatastrophes: Attenborough's trademark hushed voice. Even when he's observing a rattlesnake's killing blow, he can speak in reverential tones.
* DarkIsNotEvil: The [[DeathbringerTheAdorable Thorny Devil]], a.k.a. Moloch, named after a '''demon''', is merely an inoffensive, ant-eating little lizard.
* {{Documentary}}: Naturally.
* EverythingsBetterWithDinosaurs: Dinosaurs are briefly discussed in the first episode regarding their ability to maintain their body temperature.
* FamilyUnfriendlyDeath: The fate of that mouse which crossed paths with the rattlesnake.
* FriendToAllLivingThings: David Attenborough - he has no reservations whether faced with frogs, snakes, thorny devils, marine iguanas or alligators.
* GeniusBruiser: The crocodiles, who know that the fish are coming upstream to spawn, and who know precisely where and when this will happen. They also set aside their differences to cooperate by closing ranks, making it harder for the fish to escape them all.
* LightningBruiser: The aforementioned rattlesnake. It's fast and packs a mean punch.
** Monitor lizards can outrun a ''rabbit''.
* LimitedWardrobe: Like in all of his documentaries, Attenborough always wears the same light blue shirt and khaki chino trousers to keep people focused on whatever he's observing instead of on him, and also allows for editing between shots to look more smooth without violating a sense of continuity.
* NervesOfSteel: David Attenborough. He deliberately got close enough to an alligator to make it hiss at him. That's a lot ballsier than most are.
* NothingIsScarier: In a way, the rattlesnake sequence. You know the death strike's coming, but not when, and the wait for the mouse to get too close is arguably more tense than the actual strike.
* OffscreenTeleportation: Attenborough wears identical sets of clothes on-camera while filming any series, giving the illusion of this, and here, there is no exception.
* ParentalAbandonment: Played Straight and Subverted. This is a typical strategy for most reptiles and amphibians, but many counterexamples are presented in the form of the Poison Dart Frog, the amphisbaenians, the viviparous chameleon and the crocodiles.
* ReptilesAreAbhorrent: One of the documentary's aims is to avert / deconstruct this trope, showing that reptiles are intelligent, often social, and overall amazing animals.
* SeldomSeenSpecies: Prepare to meet several creatures whose existence you weren't aware of before.
* TurtlePower: Prominently in the fifth episode.