- Picture Books
- Ages 3–7
- Mystery
The Detective Dog
Part of the Julia Donaldson universeOpen the collection
A warm rhyming mystery about Nell the dog sniffing out missing books and leading everyone to the library.
- Best for3–7
- FormatPicture
- Length32 pp
- Read aloud~6 min
The vibe
What it’s like.
Style
- Rhyming
- Repetitive
- Conversational
- Comedic
Tone
- Funny
- Warm
- Exciting
- Heartwarming
- Cosy
Themes
Experience meters
What’s it about?
The story.
Nell is a dog with an extraordinary nose. She can sniff out lost shoes, missing toys and all sorts of mysteries, but her favourite day of the week is Monday, when she goes to school with Peter and listens to children read. One day, Nell and Peter arrive to find that all the books have disappeared. There is only one detective dog for the job, and Nell follows the scent to uncover who took them and why. The Detective Dog is a very effective Donaldson picture book because the mystery structure gives it pace, while the emotional centre is a celebration of reading, libraries and sharing stories. Sara Ogilvie's illustrations have a lively, expressive energy that distinguishes the book from the Scheffler collaborations. It is especially good for schools, libraries, early readers and children who respond to animal helpers.
Fit check
Right for your child?
Where it lands by age
- 1
- 3
- 5
- 7
- 9
- 11
- 13
- Best fit · 3–7
- Read aloud · 3–7
- Independent · 5–8
Prose load
Light
Visual support
Very high
Reluctant-reader friendly
Very
Read-aloud quality
Excellent
Works well for
- Reading aloud
- Bedtime
- Reading together
- Gift-buying
- Reluctant readers
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
- Dogs
- Libraries
- Reading for pleasure
- Gentle mystery
- School story
Avoid if
- Prefers high action
- Dislikes dog stories
Particularly good for children who are…
- Reluctant reader
- Struggling with reading
- Starting school
In the classroom
How it works in school.
A rhyming Donaldson mystery that celebrates books and libraries — a join-in read-aloud, great for prediction and a lovely nudge towards reading.
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 charm is Nell using her nose — a sniffer dog tracking missing library books by scent, the mystery solved by the same gentle instinct she uses for lost shoes and toys. A five-year-old who loves dogs gets a detective heroine; one who loves reading gets a celebration of libraries without anyone lecturing.
- Animal companions
- Being a detective
- Making a difference
- Trickery and cleverness
Why parents love it
The Donaldson for any school librarian — the missing-books mystery solved by a sniffer dog, the pro-reading message embedded without ever stopping to preach it. Sara Ogilvie's looser illustration style gives the book a different feel from the Scheffler collaborations. A favourite in real classrooms.
- Conversation starter
- Bedtime appropriate
- Educational for adult too
- Beautiful illustrations
About the creators
About the creators.
If you liked this
Three ways out of this book.
If you liked this, try…
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.
More like this…
Books that share themes and topics with this one.
Where you’ll find it
On these reading lists.
Buy or borrow
Pick up a copy.
- Bookshop.org ↗
- Waterstones ↗
- Amazon UK ↗
- Hive ↗
When you buy through the links above, we may earn a small commission — it never costs you more, and it never changes the books we choose. How we’re funded →