Why am I passionate about this?

I love telling stories that inspire readers to protect our precious world and all our fellow citizens. There isn’t much that’s more important. But I also want to share my wonder and awe about our wildly diverse kin. I’ve written four books of animal science for young adults—Daisy to the Rescue, Last of the Giants, Glowing Bunnies!?, and the latest, Love in Their Hearts. I particularly treasure that book, since it’s a collaboration with ethologist and advocate Marc Bekoff, who first opened my eyes to the fascinating inner lives of animals. Truth is, once we look, we realize we’re surrounded by worlds we can barely imagine.


I wrote...

Love in Their Hearts

By Marc Bekoff , Jeff Campbell ,

Book cover of Love in Their Hearts

What is my book about?

Through moving, surprising, and often joyful true stories, Love in Their Hearts: A Celebration of Animal Emotions and a Guide…

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The books I picked & why

Poking the Squid

By Perrin Roosevelt Ireland ,

Book cover of Poking the Squid

Jeff Campbell Why I love this book

Let’s be honest, aren’t we all insanely curious to know how other species do it? Oh, be careful what you wish for.

This ribald, sex-positive survey of the erotic, even kinky proclivities of our fellow animals had me in stitches—when it wasn’t blowing my mind.

Queer sex? Check. Female orgasms? Check. Literal gender fluidity? Check. Divorce, infidelity, oral sex… turns out, anything humans do, other animals thought of first and sometimes take further. As a bonus: Colorful, playful, graphic-novel-style illustrations mean you don’t need to imagine seahorse sex.

Poking the Squid

By Perrin Roosevelt Ireland ,

What is this book about?

For too long, science has ignored and obscured the multiplicity of animal sexual behaviour. With vivid, often funny and always beautiful watercolour illustrations in a work of graphic nonfiction, artist Perrin Roosevelt Ireland examines how animals express and have sex. With the help of her cats Ursula and Pudge, she takes us on a wild biodiversity ride from queerness, infidelity and divorce to consent, sexual cannibalism and sex change. Ireland interviews researchers at the edge of this new science and brings readers along as she learns the latest discoveries. In vivid comics of seahorse dads, polygamous albatross, and gender-fluid barnacles,…


Book cover of Fuzz: When Nature Breaks the Law

Jeff Campbell Why I love this book

I will read anything by Mary Roach because she’s hilarious.

But in particular, she’s an expert at uncovering the unexpectedly bizarre, surreal hidden side of any topic: death, astronaut training, digestion, and… human-animal conflicts.

Animals do what they do, and many a time, humans want to arrest (and even kill) them for it. And we have tried. For centuries. With wildly uneven results. And with each story of people going to battle—vainly, quixotically—with vandalous seagulls and crows, hungry bears, uninvited elephants, poisonous beans, and home-invading macaques, I think, Holy sh*t!

By Mary Roach ,

Why should I read it?

8 authors picked Fuzz as one of their favorite books, and they share why you should read it.

What is this book about?

What's to be done about a jaywalking moose? A bear caught breaking and entering? A murderous tree? Three hundred years ago, animals that broke the law would be assigned legal representation and put on trial. These days, as New York Times best-selling author Mary Roach discovers, the answers are best found not in jurisprudence but in science: the curious science of human-wildlife conflict, a discipline at the crossroads of human behavior and wildlife biology.

Roach tags along with animal-attack forensics investigators, human-elephant conflict specialists, bear managers, and "danger tree" faller blasters. Intrepid as ever, she travels from leopard-terrorized hamlets…


Book cover of The City Sings Green & Other Poems About Welcoming Wildlife

The City Sings Green & Other Poems About Welcoming Wildlife by Erica Silverman,

A unique and artful blend of poetry, science, and activism, this picture book shows how city dwellers can intervene so that nature can work her magic.

In Oslo, Norway: citizens create a honeybee highway that stretches from one side of the city to the other, offering flowerpots, resting spots, bee…

Book cover of An Immense World: How Animal Senses Reveal the Hidden Realms Around Us

Jeff Campbell Why I love this book

We already know that most species possess the same five senses we do, but use them in different ways.

But did you know that animals have other, completely different senses, ones that detect odors, heat, sound, electricity, pressure, tastes, and the Earth’s magnetic field in ways we physically can’t?

I found it hard to finish this book because every time I read something astonishing—that hammerhead sharks sense the electrical fields of prey, that monarchs taste with their feet, that octopus arms think and act independently, that dolphin sonar can see inside bodies—I had to stop and wonder WTF that must be like. 

By Ed Yong ,

Why should I read it?

24 authors picked An Immense World as one of their favorite books, and they share why you should read it.

What is this book about?

'Wonderful, mind-broadening... a journey to alternative realities as extraordinary as any you'll find in science fiction' The Times, Book of the Week

'Magnificent' Guardian

Enter a new dimension - the world as it is truly perceived by other animals.

The Earth teems with sights and textures, sounds and vibrations, smells and tastes, electric and magnetic fields. But every animal is enclosed within its own unique sensory bubble, perceiving only a tiny sliver of an immense world. This book welcomes us into previously unfathomable dimensions - the world as it is truly perceived by other animals.

We encounter beetles that are…


Book cover of How to Build a Dinosaur: The New Science of Reverse Evolution

Jeff Campbell Why I love this book

One of my biggest animal-related holy sh*t moments was when I first read paleontologist Jack Horner’s plan to turn a chicken into a dinosaur.

Not an extinct dinosaur a la Jurassic Park (a movie he consulted on), but a living, breathing, ready-to-roar brand-new dinosaur. How, you ask, can he do that without, say, cloning preserved dino DNA in blood stolen by an amber-trapped mosquito (BTW, an impossible theory)? Obviously, by reverse engineering a chicken embryo.

By altering the embryo’s chemical instructions, those same genes—instead of building a barnyard icon—can theoretically develop a snout with teeth, arms with claws, and a long tail. Yeah, yeah, yeah, this dinosaur will still have a chicken’s stature and feathers, but it could mess you up. Why, oh why do this? Because Horner thinks that success will prove, once and for all, that genetic change drives evolution. Holy sh*t!

By Jack Horner , James Gorman ,

Why should I read it?

2 authors picked How to Build a Dinosaur as one of their favorite books, and they share why you should read it.

What is this book about?

A world-renowned paleontologist reveals groundbreaking science that trumps science fiction: how to grow a living dinosaur.

Over a decade after Jurassic Park, Jack Horner and his colleagues in molecular biology labs are in the process of building the technology to create a real dinosaur.

Based on new research in evolutionary developmental biology on how a few select cells grow to create arms, legs, eyes, and brains that function together, Jack Horner takes the science a step further in a plan to "reverse evolution" and reveals the awesome, even frightening, power being acquired to recreate the prehistoric past. The key is…


Book cover of What Walks This Way: Discovering the Wildlife Around Us Through Their Tracks and Signs

What Walks This Way by Sharman Apt Russell,

Nature writer Sharman Apt Russell tells stories of her experiences tracking wildlife—mostly mammals, from mountain lions to pocket mice—near her home in New Mexico, with lessons that hold true across North America. She guides readers through the basics of identifying tracks and signs, revealing a landscape filled with the marks…

Book cover of The Soul of an Octopus: A Surprising Exploration Into the Wonder of Consciousness

Jeff Campbell Why I love this book

I’m a sucker for animals. So is, pun intended, Sy Montgomery.

One thing I feel, above all, is awe and gratitude for the wondrously diverse beings who share this beautiful planet with us, and this gorgeous book submerged me in these emotions from first page to last.

One day, Sy decided to make friends with Olivia, a giant Pacific octopus, and despite all the barriers to connection one could imagine between two species, damn if they don’t succeed. Why? Because Sy isn’t the only one desiring companionship, friendship, and love, Olivia does, too. Just writing about it makes me tear up.   

By Sy Montgomery ,

Why should I read it?

11 authors picked The Soul of an Octopus as one of their favorite books, and they share why you should read it.

What is this book about?

'Sy Montgomery's The Soul of an Octopus does for the creature what Helen Macdonald's H Is for Hawk did for raptors' New Statesman
'Charming and moving...with extraordinary scientific research' Guardian
'An engaging work of natural science... There is clearly something about the octopus's weird beauty that fires the imaginations of explorers, scientists, writers' Daily Mail

In 2011 Sy Montgomery wrote a feature for Orion magazine entitled 'Deep Intellect' about her friendship with a sensitive, sweet-natured octopus named Athena and the grief she felt at her death. It went viral, indicating the widespread fascination with these mysterious, almost alien-like creatures. Since…


Explore my book 😀

Love in Their Hearts

By Marc Bekoff , Jeff Campbell ,

Book cover of Love in Their Hearts

What is my book about?

Through moving, surprising, and often joyful true stories, Love in Their Hearts: A Celebration of Animal Emotions and a Guide to Compassionate Action by Jeff Campbell and ethologist Marc Bekoff (Armin Lear, 2026) is a powerful, visually stunning exploration of the rich inner lives of animals—and why they matter. 

Written for young adults but compelling for all ages, this inspiring volume blends cutting-edge research, firsthand accounts from leading scientists, and a stirring call to compassionate action. A foreword by Dr. Jane Goodall celebrates the book’s message of hope, responsibility, and connection, and it includes intimate portraits by wildlife photographer Thomas Mangelsen. This is an essential read for animal lovers, nature enthusiasts, students, educators, and anyone who believes compassion can change the world.

Book cover of Poking the Squid
Book cover of Fuzz: When Nature Breaks the Law
Book cover of An Immense World: How Animal Senses Reveal the Hidden Realms Around Us

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In the span of twelve hours, lives…

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