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Cover of But Not the Hippopotamus
Board · ages 1–4

But Not the Hippopotamus

Written and illustrated by Sandra Boynton

Part of the Sandra Boynton universeOpen the collection

Canonical classicBestseller list
Top giftableEndlessly rereadable

A funny, tender board book about a shy hippopotamus watching everyone else join in. One of Boynton's most emotionally useful titles, especially for toddlers who hover before entering play.

  • Best for1–4
  • FormatBoard
  • Length16 pp
  • Read aloud~3 min
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The vibe

What it’s like.

Style

  • Rhyming
  • Repetitive
  • Conversational
  • Comedic

Tone

  • Funny
  • Warm
  • Gentle
  • Heartwarming

Themes

On the pagehippopotamus, joining in, gentle inclusion, shyness, animal friends, being left out, repeated refrain, invitation to play

Experience meters

Energy2/ 5
Humour4/ 5
Scariness1/ 5
Peril1/ 5
Wonder1/ 5
Cosiness5/ 5
Emotional intensity1/ 5
Conceptual intensity1/ 5

What’s it about?

The story.

In But Not the Hippopotamus, groups of animals go jogging, dancing, shopping and cavorting together, while the hippopotamus stays just outside the action. The repeated line is comic, but it also captures a very real toddler feeling: wanting to join in while feeling unsure. The ending is small, warm and satisfying, as the hippopotamus finally chooses to go along too. Sandra Boynton keeps everything tiny and silly, but this book carries more emotional resonance than many of her pure gag books. It works both as a funny read-aloud and as a gentle inclusion story, giving adults a simple way to talk about shyness, belonging and invitation. It is essential because it adds emotional usefulness to Boynton's core board-book appeal without losing brevity or humour.

Fit check

Right for your child?

Where it lands by age

  • 1
  • 3
  • 5
  • 7
  • 9
  • 11
  • 13
  • Best fit · 1–4
  • Read aloud · 1–5
  • Independent · 2–5

Prose load

Light

Visual support

Very high

Reluctant-reader friendly

Very

Read-aloud quality

Excellent

Works well for

  • Reading aloud
  • Bedtime
  • 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

5 / 5 · Bedtime-friendly

Sensitive-child

4 / 5 · Good fit

Graphic intensity

1 / 5 · None

Best for

  • Shyness
  • Joining in
  • Toddlers
  • Gentle inclusion
  • Funny board book

Avoid if

  • Wants fast action
  • Wants story depth
  • Older than 5

Particularly good for children who are…

  • Making friends
  • Starting nursery or preschool
  • Low self esteem
  • Anxiety and worry
  • Separation anxiety

In the classroom

How it works in school.

A rhyming Boynton board book about joining in — made for reading aloud, with a gentle nudge about belonging.

Classroom role

  • Read aloud
  • Poetry and performance

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 feeling is hovering on the edge of play — every animal joining in, the hippopotamus watching from outside, the small relief when the invitation finally comes. A two-year-old who's ever stood at the edge of a soft-play group recognises every page.

  • Friendship and belonging
  • Animal companions

Why parents love it

The most quietly emotional Boynton — the hippopotamus hovering on the edge of a group is something every small child has felt. The 'come and join us' ending is one of her warmest beats. Useful for any toddler about to start playgroup or nursery.

  • Shared humour
  • Conversation starter
  • Quick to read
  • Bedtime appropriate

About the author & illustrator

Sandra Boynton.

SB

Sandra Boynton

Writer & illustrator · United States · b. 1953

Sandra Boynton is an American author-illustrator born in 1953, the dominant board-book voice of US early childhood for the last forty years. Her catalogue, Moo, Baa, La La La!, The Going to Bed Book, Hippos Go Berserk!, But Not the Hippopotamus, Pajama Time, Belly Button Book, Doggies, Snuggle Puppy, has sold over seventy million copies and is a near-universal first-bookshelf presence in US homes. Boynton's style is clean, cartoony, character-rich and rhythmically perfect for reading aloud to babies and toddlers. She also writes adult humour (Chocolate: The Consuming Passion) and records children's music albums, but her core identity is the board books. A defining ages-0–4 author.

More from Sandra Boynton

If you liked this

Three ways out of this book.

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.

Buy or borrow

Pick up a copy.

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Last reviewed · May 2026Suggest a correctionHow we recommend

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