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Series 1: 19. 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.

Source: CBeebies

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Big Lizard - Series 1: 9. How To Work Together

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!

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Big Lizard - Series 1: 19. Best Friends Forever

Series 1: 19. 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 h ...

12-09-2025

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Big Lizard - Series 1: 8. Hot And Cold

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Big Lizard - Series 1: 18. Dad's Birthday

Series 1: 18. 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?

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Big Lizard - Series 1: 7. How To Hoverboard

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

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Big Lizard - Series 1: 17. The Cocoon

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!

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Big Lizard - Series 1: 6. The Missing Volleyball

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Big Lizard - Series 1: 16. Crystals!

Series 1: 16. 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?

09-09-2025

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Big Lizard

Big Lizard - Series 1: 5. Dad's Discovery

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!

08-09-2025

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Big Lizard - Series 1: 15. The Triple Eclipse

Series 1: 15. 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 ...

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Big Lizard - Series 1: 7. How To Hoverboard

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10-09-2025

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Big Lizard - Series 1: 15. The Triple Eclipse

Series 1: 15. 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 ...

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Big Lizard - Series 1: 5. Dad's Discovery

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!

08-09-2025

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Big Lizard

Big Lizard - Series 1: 6. The Missing Volleyball

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!

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Big Lizard - Series 1: 50. The Earth Probe

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!

07-09-2025

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Big Lizard - Series 1: 49. A Big Day Out For D.o.r.i.s.

Series 1: 49. 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?

06-09-2025

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Big Lizard

Big Lizard - Series 1: 12. All About Home

Series 1: 12. 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.

03-09-2025

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Big Lizard

Big Lizard - Series 1: 47. The Day We Lost Rex

Series 1: 47. The Day We Lost Rex

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

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Big Lizard - Series 1: 14. How To Record Sound

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 ...

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Big Lizard

Big Lizard - Series 1: 8. Hot And Cold

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!

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