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Cover of Oi Dog!
Picture · ages 3–6

Oi Dog!

Written by Kes Gray · Illustrated by Jim Field

Book 2 of 8 in Oi Frog and FriendsView the full series

Major award winnerBestseller list
Top giftableAdults love it tooEndlessly rereadable

A very funny sequel that keeps the rhyme-and-seating rule but lets Dog challenge the system. It is a superb read-aloud for children who enjoy joining in, predicting rhymes and watching rules get turned upside down.

  • Best for3–6
  • FormatPicture
  • Length32 pp
  • Read aloud~6 min
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The vibe

What it’s like.

Style

  • Rhyming
  • Repetitive
  • Comedic
  • Conversational

Tone

  • Funny
  • Silly
  • Warm
  • Irreverent

Themes

On the pageanimal seats, rhyming words, wordplay, dog, phonological awareness, animal comedy, frog, rule changing

Experience meters

Energy4/ 5
Humour5/ 5
Scariness1/ 5
Peril1/ 5
Wonder2/ 5
Cosiness4/ 5
Emotional intensity1/ 5
Conceptual intensity1/ 5

What’s it about?

The story.

The animals still have to sit on things that rhyme with their names, but Dog has started to question the whole arrangement. Why should frogs sit on logs? Why should cats sit on mats? And is there any way to make the rules a bit more comfortable? Oi Dog! builds on the comic pattern of Oi Frog! while giving the joke a new twist: the animals are no longer just obeying the rhyme system, they are arguing with it. Kes Gray, Claire Gray and Jim Field create a bright, energetic picture book that is almost impossible not to perform aloud. Children can enjoy the absurd animal pairings, the satisfying rhyme logic and the sense that language itself is a playground. A strong sequel and a reliable crowd-pleaser.

Fit check

Right for your child?

Where it lands by age

  • 1
  • 3
  • 5
  • 7
  • 9
  • 11
  • 13
  • Best fit · 3–6
  • Read aloud · 2–7
  • Independent · 5–7

Prose load

Minimal

Visual support

Very high

Reluctant-reader friendly

Very

Read-aloud quality

Excellent

Works well for

  • Reading aloud
  • Bedtime
  • Reading together
  • Gift-buying
  • Reluctant readers
Low sensitivityNo content warnings

Nothing in the book is likely to concern most parents. Safe to recommend without preview.

Bedtime suitability

4 / 5 · Bedtime-friendly

Sensitive-child

5 / 5 · Good fit

Graphic intensity

1 / 5 · None

Best for

  • Rhyming read aloud
  • Phonics play
  • Preschool comedy
  • Animal wordplay
  • Sequel that works

Avoid if

  • Dislikes silly rhyme
  • Wants story depth
  • Prefers quiet lyrical books
  • Needs low repetition

Particularly good for children who are…

  • Starting nursery or preschool
  • Reluctant reader
  • Struggling with reading
  • Starting school

In the classroom

How it works in school.

A riotously funny rhyming series built on rhyme — superb for joining in, predicting rhymes and playing with words.

Classroom role

  • Read aloud
  • Poetry and performance

Good for teaching

  • Prediction
  • Vocabulary

A book children love that happens to support school — never a stand-in for the texts a class is taught with. Reviewed for the classroom · June 2026.

Why it lands

Why they love it.

Why kids love it

The specific pleasure is rule-breaking. Frog has had enough of sitting on logs, and book two is the moment he flips the system — dogs on frogs, the world inverted. A three-year-old discovers the satisfying possibility that the rules might just be argued with. The sequel that builds the joke instead of repeating it.

  • Talking to animals
  • Breaking the rules safely
  • Trickery and cleverness
  • Making a difference

Why parents love it

The Oi sequel that proves the formula has somewhere to go — Frog turns the rhyme rules upside down, Dog is annoyed, and the children laughing along get to side with the underdog. Strong join-in reading; one of the best read-aloud picture books in current UK publishing.

  • Shared humour
  • Quick to read
  • Bedtime appropriate
  • Educational for adult too

In the series

Oi Frog and Friends.

8 books · open the series →

About the creators

About the creators.

KG

Kes Gray

Writer · United Kingdom · b. 1960

Kes Gray is a British author born in 1960, best known for the bestselling Oi Frog! rhyming picture-book series (illustrated by Jim Field): Oi Frog!, Oi Dog!, Oi Cat!, Oi Duck-billed Platypus!, Oi Aardvark! and more. Each book runs on absurd-rhyme animal-on-X seating-chart logic, with deliberately silly word-play that lands well on read-aloud. Gray also wrote the long-running Daisy chapter-book series (Daisy and the Trouble with Zoos, …Life, …Maggots etc.), and Eat Your Peas. His voice is gleeful, child-aligned and quietly subversive, children typically love that the books treat absurd rule-fixation as a moral universe. A reliable read-aloud author for ages 3–7 (picture books) and 6–9 (Daisy).

More from Kes Gray
CG

Claire Gray

Writer · United Kingdom

Claire Gray is a British author who co-wrote some Oi Frog! series titles with her father Kes Gray, including Oi Dog!, illustrated by Jim Field. The Oi books run on absurd-rhyme animal-on-X seating-chart logic with deliberately silly word-play. Claire Gray's role on the series is as co-writer rather than primary author. A reliable contemporary UK picture-book co-author for ages 3–6.

More from Claire Gray
JF

Jim Field

Illustrator · United Kingdom · b. 1980

Jim Field is a British illustrator born in 1980, who lives and works in Paris and has become one of the most in-demand picture-book illustrators in UK children's publishing. He is best known for his collaborations with Kes Gray on the Oi Frog! series and with Rachel Bright on The Lion Inside, The Squirrel Who Squabbled and others. Field's style is energetic, character-driven and graphic, with clean compositions and very expressive animals, instantly recognisable on a bookshop table. He works almost exclusively as illustrator rather than writer. A reliable visual signal of fun, well-paced picture books for ages 3–7.

More from Jim Field

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Lateral matches. Same shelf, different texture.

Come into this from…

Easier or preparing reads — perfect lead-ins.

Where to go next…

Escalation reads — a step up in scale, silliness, or stakes.

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Last reviewed · May 2026Suggest a correctionHow we recommend

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