Catch up TV
Series 1: 10. 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.
Source: CBeebies
Most recent episodes of Big Lizard
Big Lizard
Series 1: 10. 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.' ...
23-01-2026
CBeebies
Big Lizard
Series 1: 9. 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!
22-01-2026
CBeebies
Big Lizard
Series 1: 8. 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!
21-01-2026
CBeebies
Big Lizard
Series 1: 7. How To Hoverboard
Cosima and Big Lizard's solar-powered hoverboards run out of battery at nightfall. Can glowbugs be the answer?
20-01-2026
CBeebies
Big Lizard
Series 1: 6. The Missing Volleyball
Twig steals Cosima's volleyball. A chase leads Big Lizard and Cosima to her den... and also to a happy discovery!
19-01-2026
CBeebies
Big Lizard
Series 1: 40. 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!
18-01-2026
CBeebies
Big Lizard
Series 1: 31. 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?
18-01-2026
CBeebies
Big Lizard
Series 1: 39. 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!
17-01-2026
CBeebies
Big Lizard
Series 1: 30. 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!
17-01-2026
CBeebies
Big Lizard
Series 1: 3. 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 ne ...
17-01-2026
CBeebies
Most popular episodes of Big Lizard
Big Lizard
Series 1: 14. 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 cos ...
25-11-2025
CBeebies
Big Lizard
Series 1: 17. 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!
28-11-2025
CBeebies
Big Lizard
Series 1: 13. 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.
24-11-2025
CBeebies
Big Lizard
Series 1: 50. 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!
07-11-2025
CBeebies
Big Lizard
Series 1: 5. 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!
16-01-2026
CBeebies
Big Lizard
Series 1: 48. 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.
05-11-2025
CBeebies
Big Lizard
Series 1: 40. 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!
18-01-2026
CBeebies
Big Lizard
Series 1: 7. How To Hoverboard
Cosima and Big Lizard's solar-powered hoverboards run out of battery at nightfall. Can glowbugs be the answer?
20-01-2026
CBeebies
Big Lizard
Series 1: 3. 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 ne ...
17-01-2026
CBeebies
Big Lizard
Series 1: 42. 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?
28-10-2025
CBeebies