Big Lizard

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  E1

  The Day We Landed

  Whilst exploring deep space, a meteor strikes Cosima and Dad's ship! After crash-landing on the unexplored planet of Proxima, Cosima makes a new best friend called Big Lizard.

  2024-10-28 · 7m
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  E2

  The Trouble with Trilobites

  When a pack of pesky, migrating trilobites overrun the ship, Big Lizard has to use a hidden talent to lure them away. But one little trilobite, Rex, decides to stay.

  2024-10-29 · 7m
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  E3

  How We Met Dunk

  Searching for a vital part of the ship that was lost during their crash-landing, Cosima and Big Lizard find Dunk stuck on a beach. They use science to save the day and make a new friend.

  2024-10-30 · 7m
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  E4

  The Day We Met Ammon

  Dad drops an essential gizmo in a hard-to-reach place. Big Lizard takes them on an underwater adventure to meet Ammon, the tentacled solution to their problem!

  2024-10-31 · 7m
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  E5

  Dad's Discovery

  Whilst searching for new discoveries, a rockfall traps Dad, Cosima and Big Lizard in a cave. Just when all is lost, Dad finally discovers a new species!

  2024-11-01 · 7m
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  E6

  The Missing Volleyball

  Twig steals Cosima's volleyball. A chase leads Big Lizard and Cosima to her den... and also to a happy discovery!

  2024-11-04 · 7m
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  E7

  How to Hoverboard

  Cosima and Big Lizard's solar-powered hoverboards run out of battery at nightfall. Can glowbugs be the answer?

  2024-11-05 · 7m
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  E8

  Hot and Cold

  Volcanic smoke blocks the three Proximan suns, which causes Big Lizard to become worryingly cold. Cosima's on the case and comes up with a superhot solution!

  2024-11-06 · 7m
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  E9

  How to Work Together

  Cosima, Big Lizard and Ammon are squabbling over Dad's precious explorer notebook when disaster strikes. Only by working together can they save it from being lost forever!

  2024-11-07 · 7m
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  E10

  When We Lost D.O.R.I.S.'s Brain

  When a giant beetle steals D.O.R.I.S.'s brain, thinking it's a nut, Cosima and Big Lizard give chase through the forest. Big Lizard uses unique skills to rescue poor D.O.R.I.S.'s superbrain.

  2024-11-08 · 7m
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  E11

  Happy Campers

  Cosima and Big Lizard have a camping sleepover with a friendly little crab. In the morning, their new friend is missing, but why?

  2024-11-11 · 7m
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  E12

  All About Home

  Cosima is so excited to tell Big Lizard about her life on earth that she doesn't realise he has something exciting to say to her.

  2024-11-12 · 7m
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  E13

  When Dad Sleepwalked

  Cosima and Big Lizard investigate the cause of Dad's mysterious sleepwalking in an adventure that takes them around Proxima and right back home again.

  2024-11-13 · 7m
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  E14

  How to Record Sound

  Big Lizard accidentally deletes some of Dad's 'boring' Proximan audio recordings. Through a dramatic sound adventure, Cosima realises the recordings are not boring - they're cosmic!

  2024-11-14 · 7m
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  E15

  The Triple Eclipse

  A triple solar eclipse is about to happen! Cosima and Big Lizard race down the volcano and hitch a lift on a dragonfly so that they can get vital equipment to Dad in the nick of time.

  2024-11-15 · 7m
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  E16

  Crystals!

  Big Lizard has found an epic crystal, and Cosima is jealous. Their squabbling reaches its peak at the top of the volcano! Will they learn to share before it's too late?

  2024-11-18 · 7m
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  E17

  The Cocoon

  A dragonfly steals a bee cocoon that Cosima had vowed to keep safe. Cosima and Big Lizard give chase, leading to a surprising solution with a vacuum cleaner and some sticky vines!

  2024-11-19 · 7m
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  E18

  Dad's Birthday

  When Cosima wrongly accuses Big Lizard of eating Dad's birthday cake, he vanishes. Has he run away, or is he planning a special surprise to save the day?

  2024-11-20 · 7m
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  E19

  Best Friends Forever

  Big Lizard is jealous of the vacuum cleaner and hides it from Dad and Cosima. Ammon decides it's her new best friend, whilst Cosima reassures Big Lizard that he will always be her BFF.

  2024-11-21 · 7m
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  E20

  Magnetite

  A strange find far away from the ship breaks D.O.R.I.S.’s satnav. Luckily, Big Lizard’s on hand to teach Cosima how to find her way around without technology.

  2024-11-22 · 7m
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  E21

  The Problem Plant

  Big Lizard frustrates Dad by stealing a strange plant from the ship. A disaster is averted when Big Lizard persuades Dad that there's more to this plant than meets the eye - and nose...

  2024-11-25 · 7m
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  E22

  The Sea Meteorite!

  When a meteorite splashes into the sea, Dad and Cosima cause problems by claiming it in the name of science, against the wishes of the sea creatures.

  2024-11-26 · 7m
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  E23

  Astronaut Health Check

  Dad needs some training to pass his astronaut fitness test. Cosima and Big Lizard put him through his paces! When Rex gets into trouble, Dad’s hard work finally pays off.

  2024-11-27 · 7m
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  E24

  How to Fix a Tyre

  When the buggy gets a flat tyre, Dad, Cosima and Big Lizard are stranded. Big Lizard’s playful nature helps reveal a creative solution to their problem.

  2024-11-28 · 7m
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  E25

  Cosima in Charge

  Dad has left Cosima in charge for the day. It seems like an excellent opportunity to have a massive party! What could possibly go wrong?

  2024-11-29 · 7m
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  E26

  Happy Proximas!

  When it unexpectedly snows, Cosima decides it must be Christmas! Rex disrupts her festive preparations, but it doesn't stop the family having a perfect 'Proximas'.

  2024-12-02 · 7m
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  E27

  The Day Ammon Overcame Her Fear

  Ammon gets spooked by a tiny insect, but overcomes her fear to rescue Cosima and Big Lizard from the rapids.

  2025-01-27 · 7m
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  E28

  The Night of the Slug

  Big Lizard and Cosima undertake an exciting night-time mission rehoming a friendly slug that's taken residence in Cosima's bedroom!

  2025-01-28 · 7m
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  E29

  The Shiny Fruit

  Cosima and Big Lizard find some fascinatingly slippery fruit, but bringing it safely back to the ship is more challenging than they imagined!

  2025-01-29 · 7m
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  E30

  Dad's Drone

  Big Lizard wants to have a go with Dad's new drone, but first he has to prove that he can go a whole day without breaking something precious. Good luck, Big Lizard!

  2025-01-30 · 7m
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  E31

  A Medical Emergency

  Whilst playing doctors, Cosima discovers an animal with no heartbeat! Can Cosima and Big Lizard save the poor creature with Dad's medical kit?

  2025-01-31 · 7m
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  E32

  All Out of Marmalade

  When Dad runs out of marmalade, Big Lizard shows Cosima a plant that's growing Proximan oranges. The leaves turn out to be giant bugs, who aren't happy about sharing their fruit!

  2025-02-03 · 7m
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  E33

  After the Storm

  After a storm passes overhead, many creatures turn up in surprising places and need Cosima and Big Lizard's help. But try as they might, the friends can't find poor Rex.

  2025-02-04 · 7m
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  E34

  The River Picnic

  Cosima and Big Lizard go paddleboarding, but Dunk and the river creatures are behaving strangely. Could it be something to do with Dad's desire for a cup of tea?

  2025-02-05 · 7m
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  E35

  The Overfriendly Neighbours

  When Big Lizard and Cosima get covered in nectar, they become unwilling house guests to some overfriendly beetles. Will Dunk come to their rescue?

  2025-02-06 · 7m
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  E36

  The Lesson

  Whilst Dad is stuck in the desert, D.O.R.I.S. tries to give Cosima and Big Lizard a lesson on friction. As things begin to heat up, a creature steals Cosima's only means to locate Dad!

  2025-02-07 · 7m
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  E37

  Cosmic Groove

  Dad's favourite record won't play anymore, so Cosima and Big Lizard secretly plan to learn the song and surprise him. However, they have trouble recruiting a drummer.

  2025-02-10 · 7m
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  E38

  All About Coral

  Big Lizard and Cosima create a fantastic water ride when they dislodge an underwater rock blocking a volcanic vent. It's all good fun until they realise the sea is starting to change.

  2025-02-11 · 7m
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  E39

  The Vegetable Robbery!

  When all the vegetables from their garden are stolen, detectives Cosima and Big Lizard investigate all over the neighbourhood - only to return to the scene of the crime!

  2025-02-12 · 7m
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  E40

  Big Lizard's Big Itch

  Big Lizard isn't happy in his skin! Cosima tries everything to stop him scratching until she realises that's exactly what he needs to do. He's shedding his skin!

  2025-02-13 · 7m
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  E41

  When Dad Got the Hiccups

  Dad gets a severe case of Proximan hiccups. Big Lizard and Cosima do their best to help, but their attempt to scare Dad goes wrong when a real 'monster' turns up!

  2025-02-14 · 7m
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  E42

  Personal Space

  When Cosima finally finds a quiet place to read her book, she realises peace and quiet aren't all they're made out to be. Where's Big Lizard when she needs him?

  2025-02-17 · 7m
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  E43

  A Place to Sleep

  Whilst Dad searches for a faulty wire, Cosima and Big Lizard play tag in the ship and accidentally break Big Lizard's bath bed! Where will he sleep now? And where's that pesky wire?

  2025-02-18 · 7m
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  E44

  The Hoverboard Race

  During a hoverboard race, Dad's new super-powered hoverboard malfunctions, so Cosima and Big Lizard throw the race to rescue him!

  2025-02-19 · 7m
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  E45

  Prank Day!

  Dad and Cosima both think they're the best at pranking. Their prank war quickly spirals out of control, until Big Lizard finally reveals Proxima's real pranking champion!

  2025-02-20 · 7m
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  E46

  The Camera

  Cosima takes over Dad's mission to film a unique underwater plant. But his special camera proves harder to operate than she'd thought, and Big Lizard keeps getting distracted.

  2025-02-21 · 7m
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  E47

  The Day We Lost Rex

  Rex is missing, but Dad, Cosima and Big Lizard need him to save them from a giant slug!

  2025-02-24 · 7m
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  E48

  How to Speak Lizard

  When Dad's Lizard Translator malfunctions, Cosima is carried away by a giant beetle! Cosima and Big Lizard realise they don't need to speak the same language to be best friends.

  2025-02-25 · 7m
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  E49

  A Big Day Out for D.O.R.I.S.

  Dad gets trapped in the shower when D.O.R.I.S. decides to visit the sea. Can Big Lizard and Cosima stop her before she does herself permanent damage?

  2025-02-26 · 7m
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  E50

  The Earth Probe

  Finding an earth probe makes Dad homesick. When Big Lizard accidentally destroys it, Cosima knows what to do. She recreates the contents - Proxima-style!

  2025-02-27 · 7m
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  E51

  One Whole Year

  It's been one year since Cosima crash landed on Proxima, but no-one else has remembered this anniversary! Can a perfect picnic jolt their memories?

  2025-02-28 · 7m
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  E52

  The Day We Left

  When D.O.R.I.S. reveals a large meteor is about to land on the spaceship, it's finally time to leave. But should Big Lizard leave too? What about all those who need him on Proxima?

  2025-03-03 · 7m
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Top cast

Josh Widdicombe

Dad (voice)

Mandip Gill

D.O.R.I.S (voice)

Lois Sefton

Cosima (voice)

Dan Chambers

Big Lizard