Walking With Wikis
Walking with Monsters
Series information
Episodes Water Dwellers
Reptile's Beginnings
Clash of Titans
Trilogy of Life'
Narrator Kenneth Branagh (Original version)
Edward Gero (U.S. version)
Executive producer(s)
Producer(s) Chloë Leland
Tim Haines
Broadcast information
Original channel BBC One, BBC Three
Original run 5 November 2005
Preceded by:
Sea Monsters
Followed by:
Walking With Dinosaurs (2025)

Walking with Monsters: Life Before Dinosaurs - broadcast in North America as Before the Dinosaurs: Walking with Monsters - is a three-part British documentary film series about life in the Paleozoic, bringing to life extinct arthropods, fish, amphibians, synapsids, and reptiles. It is narrated by Kenneth Branagh, and by Edward Gero in the American version. Using state-of-the-art visual effects, this prequel to Walking with Dinosaurs shows for example how a two-ton predatory fish came on land to hunt. The series draws on the knowledge of over 600 scientists and shows nearly 300 million years of Paleozoic history, from the Cambrian period (530 million years ago) to the Early Triassic period (248 million years ago). It was written by Tim Haines. Water Dwellers and Reptile's Beginnings is directed by Cloë Leland, and Clash of Titans is directed by Tim Haines.

WWM cover

Cover of WWM DVD

It has also aired as a two-hour special on the Canadian and American Discovery Channel.

At the 58th Primetime Emmy Awards in 2006 it won the Emmy Award in the category Outstanding Animated Program (For Programming One Hour or More).


Episode title Episode number Original airdate
Water Dwellers 1 8 November 2005
Reptile's Beginnings 2 15 November 2005
Clash of Titans 3 19 November 2005

Artistic Touches[]

As in the entire Walking with line of films, the animals sometimes interact with the camera:

  • An Anomalocaris knocks the camera while its swimming
  • A Brontoscorpio stings the camera and breaks it.
  • A Brontoscorpio crawls over the camera and a Cephalaspis swims over the camera.
  • Another Brontoscorpio bumps the camera with its claw as it crawls onto land.
  • A Hynerpeton knocks the camera while he is swimming, so does a Hyneria.
  • A Hynerpeton breathes on the camera.
  • A Hyneria splatters water on the camera while diving back into the water.
  • A Mesothelae crawls on the camera, and so does an Arthropleura.
  • A Mesothelae kicks dirt on the camera when she crawls over it.
  • Dimetrodon sniffs the camera.
  • A Dimetrodon shakes intestines to avoid eating the faeces inside, and most of the feces and blood splats onto the camera.
  • A Dimetrodon digs up some dirt, and it lands on the camera.
  • When A baby Dimetrodon gets eaten by an adult, the adult also blacks out the camera.
  • A baby Dimetrodon splatters some dung on the camera when it jumps in a pile of it.
  • A Scutosaurus roars at the camera.
  • A Gorgonops also sniffs the camera.
  • A Gorgonops splatters water on the camera when it jumps in some water.
  • A Diictodon looks curiously at the camera.
  • A Proterosuchus also knocks the camera while it is swimming.
  • Lystrosaurus jumping into the water splashes water on the camera.
  • A Lystrosaurus bumps and sniffs the camera.

Body Part Close-Ups[]

Occasionally, the camera gets a close-up of certain body parts of animals. Here are the list of body part close-ups:


It exists as two different edits of Walking with Monsters. The first, broadcast on TV, contains text at the top and the bottom left, like predators, period, temperatures, locations and dangers. This version is commonly in 4/3, but can be found in 16/9. The second edit is the DVD edit, in 16/9. The image is much wider, but is often without the info in the top and bottom left.

Capture d’écran 2017-09-30 à 12.19

French first scene with text.

Capture d’écran 2017-09-30 à 12.19

Same scene, but without text

Several new scenes were added in extended edition of the series:

  • The surface of the Hadean Earth on which meteorites fall.
  • A little more scenes with Devonian scorpions.
  • A short scene with Carboniferous trees right before the Mesothelae returns to its flooded hole.
  • Edaphosaurus chases away the dragonfly.
  • Several short moments with snowy landscape just before Dimetrodon near its nest is shown.
  • A brief moment with Proterosuchus closing its jaws right before the evolution of Euparkeria.
  • In the end, several scenes from New Blood and one short scene from The Ballad of Big Al reused.

Paleontological inaccuracies[]

Because the series takes an artistic license with regards to its views on evolution, there are a number of inaccuracies especially related to ancestor-descendant relationships. According to the cladistics viewpoint which is favored by modern evolutionary biologists, one can never scientifically claim that a particular fossil form must be directly ancestral to another life form (fossil or not), at most it can be claimed what fossil forms are likely basal to what other life forms.[1][2] Not only does the series repeatedly suggest this anyway, many of the claimed 'direct ancestors' are not even considered basal:

  • Cephalaspis was not the ancestor of gnathostomes (jawed vertebrates) or tetrapods. Gnathostomes (in the form of placoderms and acanthodians) appear in the fossil record before Cephalaspis, probably originated from, or are closely related to, thelodonts, instead. Furthermore, even though Cephalaspis was found only during the early Devonian, it is shown being pursued by the Late Silurian Brontoscorpio.
  • Diictodon, Gorgonops and Rhinesuchus are only known from South Africa, yet in episode 3 they are portrayed living with Scutosaurus which lived only in Siberia. 
  • In the series, Petrolacosaurus is incorrectly identified as an ancestral synapsid, when in fact, it was an early diapsid and could therefore not have been the ancestor of any synapsids (e.g. Edaphosaurus). The most basal synapsid, Archaeothyris, would have been a more suitable candidate.

View inaccuracies page to have a look at all inaccuracies in Walking with Monsters.


Some viewers criticize Walking with Monsters to be an overly dramatic presentation of speculation as fact. [1] (see editorial review)

In the "Trilogy of Life" documentary, included on the Walking with Monsters DVD, the producers of the "Walking With" trilogy state that their intention was not to write a scientific thesis but to bring prehistoric animals to life. The documentary also states that science is littered with mistakes (some scientists might even say that science only progresses by making mistakes) and that while scientists can make guesses as to how these prehistoric creatures might have looked or behaved while they were alive, there is no guarantee that these guesses are correct and in this case, we have no way of knowing for sure.


External links[]