- What if you had an animal tongue!?, by Sandra Markle ; illustrated by Howard McWilliam
- Snow school, Sandra Markle ; illustrated by Alan Marks
- Could you ever dive with dolphins!?, written by Sandra Markle ; illustrated by Vanessa Morales
- Wild inventions, ideas inspired by animals, Sandra Markle
- Spiders, biggest! littlest!, by Sandra Markle ; photographs by Simon Pollard
- What if you had animal eyes!?, by Sandra Markle ; illustrated by Howard McWilliam
- The great monkey rescue, saving the Golden lion tamarins, Sandra Markle
- Could you ever waddle with penguins!?, written by Sandra Markle ; illustrated by Vanessa Morales
- Sneaky, spinning, baby spiders, Sandra Markle
- What if you had T. rex teeth!?, and other dinosaur parts, by Sandra Markle ; illustrated by Howard McWilliam
- Eagles, by Sandra Markle
- Hush up and migrate!, by Sandra Markle ; illustrated by Howard McWilliam
- The great penguin rescue, saving the African penguins, by Sandra Markle
- Markle, Sandra, Animal predators
- Termites, hard-working insect families, Sandra Markle
- Faulty hearts, true survival stories, Sandra Markle
- Butterfly tree, Sandra Markle ; illustrated by Leslie Wu
- Outside and inside mummies, Sandra Markle
- Animal heroes, true rescue stories, Sandra Markle
- What if you could spy like a narwhal!?, explore the superpowers of amazing animals, by Sandra Markle ; illustrated by Howard McWIliam
- Wolves, Sandra Markle
- Harvestmen, secret operatives, Sandra Markle
- The case of the vanishing honey bees, a scientific mystery, Sandra Markle
- Foxes, by Sandra Markle
- Shattered bones, true survival stories, by Sandra Markle
- The long, long journey, the godwit's amazing migration, by Sandra Markle ; illustrated by Mia Posada
- What if you had animal scales!?, or other animal coats?, by Sandra Markle ; illustrated by Howard McWilliam
- The case of the vanishing golden frogs, a scientific mystery, Sandra Markle
- Waiting for ice, Sandra Markle ; illustrated by Alan Marks
- Black widows, deadly biters, Sandra Markle
- What if you could sniff like a shark?, explore the superpowers of ocean animals, by Sandra Markle ; illustrated by Howard McWilliam
- The great wolf rescue, saving the red wolves, by Sandra Markle
- The woolly monkey mysteries, the quest to save a rainforest species, Sandra Markle
- Hip-pocket papa, Sandra Markle ; illustrated by Alan Marks
- A mother's journey, Sandra Markle ; illustrated by Alan Marks
- The case of the vanishing little brown bats, a scientific mystery, Sandra Markle
- The great leopard rescue, saving the Amur leopards, Sandra Markle
- Markle, Sandra, What if you had series
- Thirsty, thirsty elephants, Sandra Markle ; illustrated by Fabricio VandenBroeck
- Toad weather, by Sandra Markle ; illustrations by Thomas Gonzalez
- Markle, Sandra, Insect world
- The great rhino rescue, saving the southern white rhinos, Sandra Markle
- Markle, Sandra, Sandra Markle's science discoveries
- Snowy owl invasion!, tracking an unusual migration, Sandra Markle
- What if you had animal teeth?, by Sandra Markle ; illustrated by Howard McWilliam
- Markle, Sandra, Animal prey
- Hornets, incredible insect architects, Sandra Markle
- Musk oxen, Sandra Markle
- Family pack, Sandra Markle ; illustrated by Alan Marks
- Hush up and hibernate!, by Sandra Markle ; illustrated by Howard McWilliam