Books & Harvest Mouse Publishing

Books by Dr Sean McCormack

Dr Sean McCormack is the author of Beaver Believers (2025), a children's picture book about how beavers can help communities and nature, and co-author of The Happy Dog Cookbook (2019). He publishes through his own independent imprint, Harvest Mouse Publishing. A new book, Falcon Friends, following more wild adventures from Abi, Patrick and Jacob, is set for release before Christmas 2026.

Book 1 Beaver Believers

Beaver Believers: Patrick, Abi & Jacob's Wild Adventures (Book 1)

Written by Dr Sean McCormack | Illustrated by Siski Kalla | Harvest Mouse Publishing, 2025

When their town keeps flooding, three curious friends, Patrick, Abi and Jacob, have a big idea: bring back the beavers! The grown-ups aren’t so sure. Armed with facts, determination and a lot of pester power, the children set out to show everyone how nature’s original engineers could save the day.

Inspired by Sean’s real-life work bringing beavers back to London, Beaver Believers blends a warm, funny story with real, science-based facts about beavers and their habitats. Siski Kalla’s colourful illustrations are full of hidden wildlife to spot. It is a story about hope, teamwork and believing that young people really can make a difference.

Perfect for

Buy your copy

ISBN (hardback): 9781919292205

Hardback

RRP

The Great British Bookshop and Waterstones

Paperback & eBook

eBook £3.99 · Amazon (all territories)

Schools, bookshops & trade orders

Beaver Believers is available on Amazon, BookVault, The Great British Bookshop and other online retailers. Booksellers, schools and organisations can order hardback copies directly at a 55% trade discount. For wholesale enquiries, please get in touch via the contact form. Download the Advance Information Sheet below.

Author visits

Sean visits schools, libraries and festivals with interactive Beaver Believers sessions. Button: Enquire about an author visit

What people are saying

“Brimming with practical, down-to-earth, science-backed information and skills to empower the next generation of planet protectors.”

– Gillian Burke, TV presenter

A children’s book with a difference: Beaver Believers really could save our homes and neighbourhoods from a damp disaster. And it’s a cracking read!”

– Stephen Moss, naturalist, author and TV producer

“A delightful celebration of nature and community spirit… it will inspire children to believe they have the power to influence grown ups and make a big difference to the natural world around them.”

– Maddie Moate, CBeebies and BAFTA award-winning presenter

“Gorgeous. Sean’s enthusiasm for all things beaver is infectious.”

– Sandra King, CEO, Beaver Trust

“What a brilliant book. Heartwarming, clear and factual.”

– Derek Gow, rewilder and author

“Absolutely gnawesome!”

– Billy Heaney, zoologist and TV presenter

“What a beautiful book with a wonderful message. Children will love it and I can’t wait to read it to my granddaughter.”

– Lorraine Kelly, journalist and TV presenter

The Happy Dog Cookbook

The Happy Dog Cookbook (2019)

By Annabel Karmel and Dr Sean McCormack, with Tails.com

Twenty-four seasonal, nutritious recipes for healthy dog treats, some tasty enough for humans too (try the orchard fruit flapjacks!). The book is packed with Sean’s vet advice on healthy weight, balanced diets and keeping dogs mentally stimulated. All profits go to StreetVet, the charity of volunteer vets and nurses who provide free care for the pets of people experiencing homelessness.

Harvest Mouse Publishing

About Harvest Mouse Publishing

Harvest Mouse Publishing is Sean’s independent children’s book imprint. It is named after the tiny harvest mice he helped reintroduce to Ealing. It publishes nature stories that are accurate, hopeful and inclusive, and that show children they can make a real difference. Beaver Believers is the first in the series Patrick, Abi & Jacob’s Wild Adventures.

Coming soon: Falcon Friends. Abi, Patrick and Jacob are back for more wild adventures in Sean’s second picture book, out before Christmas 2026.

Frequently asked questions

What is Beaver Believers about?

Beaver Believers is a children’s picture book by vet and conservationist Dr Sean McCormack, illustrated by Siski Kalla. Three friends use facts and “pester power” to convince the adults in their flood-hit town to bring back beavers. It is inspired by the real Ealing Beaver Project in London.

What age is Beaver Believers for?

It is written for primary-age children, roughly 4 to 8, to read with an adult, and confident readers can enjoy it on their own. It works well in classrooms and libraries.

Where can I buy Beaver Believers?

The hardback is available from The Great British Bookshop and Waterstones. The paperback and eBook are on Amazon, and it is also available from BookVault and other online retailers. Schools and shops can order hardbacks at trade discount from Harvest Mouse Publishing.

Is Beaver Believers based on a true story?

The characters are fictional, but the story is inspired by Sean’s real work leading the Ealing Beaver Project. There, beavers released in 2023 have helped reduce flooding in West London.