- Markle, Sandra, Animal prey
- I wish I was a lion, by Sandra Markle
- The case of the vanishing little brown bats, a scientific mystery, Sandra Markle
- Exploring winter, written and illustrated by Sandra Markle
- Toad weather, by Sandra Markle ; illustrations by Thomas Gonzalez
- Thirsty, thirsty elephants, Sandra Markle ; illustrated by Fabricio VandenBroeck
- Creepy, crawly baby bugs, Sandra Markle
- Hip-pocket papa, Sandra Markle ; illustrated by Alan Marks
- The great leopard rescue, saving the Amur leopards, Sandra Markle
- Markle, Sandra, What if you had series
- Finding home, Sandra Markle ; illustrated by Alan Marks
- Discovering graph secrets, experiments, puzzles, and games exploring graphs, Sandra Markle
- Outside and inside spiders, by Sandra Markle
- Outside and inside kangaroos, by Sandra Markle
- Musk oxen, Sandra Markle
- I wish I was an orca, by Sandra Markle
- Killer whales, Sandra Markle
- Spiders, biggest! littlest!, by Sandra Markle ; photographs by Simon Pollard
- Hush up and hibernate!, by Sandra Markle ; illustrated by Howard McWilliam
- The great penguin rescue, saving the African penguins, Sandra Markle
- The long, long journey, the godwit's amazing migration, Sandra Markle ; illustrations by Mia Posada
- Snowy owl invasion!, tracking an unusual migration, Sandra Markle
- Little lost bat, Sandra Markle ; illustrated by Alan Marks
- Sneaky, spinning, baby spiders, Sandra Markle
- Tough, toothy baby sharks, Sandra Markle
- The great monkey rescue, saving the Golden lion tamarins, Sandra Markle
- The case of the vanishing golden frogs, a scientific mystery, Sandra Markle
- The great giraffe rescue, saving the Nubian giraffes, Sandra Markle
- Markle, Sandra, Biggest! Littlest!
- Polar bears, Sandra Markle
- Praying mantises, hungry insect heroes, Sandra Markle
- Outside and inside bats, by Sandra Markle
- Bats, biggest! littlest!, Sandra Markle
- Porcupines, Sandra Markle
- Snow school, Sandra Markle ; illustrated by Alan Marks
- Slippery, slimy baby frogs, Sandra Markle
- The great rhino rescue, saving the southern white rhinos, Sandra Markle
- Outside and inside alligators, by Sandra Markle
- Outside and inside killer bees, Sandra Markle
- Black widows, deadly biters, Sandra Markle
- Outside and inside trees, by Sandra Markle
- Down, down, down in the ocean, Sandra Markle ; illustrations by Bob Marstall
- Wolves, Sandra Markle
- Animal heroes, true rescue stories, Sandra Markle
- What if you had animal teeth!?, by Sandra Markle ; illustrated by Howard McWilliam
- Growing up wild, bears, Sandra Markle
- A rainy day, by Sandra Markle ; illustrated by Cathy Johnson
- Sharks, biggest! littlest!, Sandra Markle ; photographs by Doug Perrine
- How many baby pandas?, Sandra Markle
- Crocodiles, Sandra Markle