Sandra Markle

Great white sharks can weigh thousands of pounds, and their enormous tail fins send them zooming through the water in pursuit of prey. Find out how these top predators hunt and raise their young....

Owls are one of the world's top predators. These stealthy hunters can fly nearly silently, see long distances, and easily hear prey. Discover the hunting behaviors of owls and see how they train their owlets....

Eagles' feather-covered wings, sharp talons, and keen vision make them the top predators in their habitats. These excellent hunters can easily spot prey and glide through the air. Learn about the lives of eagles....

Lions are deadly predators. Their size, keen eyesight, and razor-sharp teeth and claws help them take down prey. Find out how lions hunt, interact with other lions in their pride, and raise their young....

Crocodiles are near the top of the food chain. They have keen senses that make them excellent hunters. Listeners will learn all about them, from how they find prey to how they train their young....

Polar bears have amazing strength, teeth, and senses that make them one of nature's best hunters. Listeners will learn all about these fierce predators, from their hunting behaviors to how they raise their cubs....

With their sharp senses, ability to run long distances, and powerful bites, wolves are top predators in their habitats. Find out how they work together to hunt and raise their young....

Grizzly bears are top predators in their habitats. Their enormous size, keen senses, and ultra-sharp teeth and claws make them one of nature's greatest hunters. Learn about their lives and how they hunt down prey....

Acclaimed science author Sandra Markle offers a fascinating look at Gobi bears - the rarest bears on the planet. These adorable animals face threats ranging from illegal gold miners to climate change. Find out more about these bears, which are considered a national treasure in Mongolia....

In the cloud forests of the Amazon Basin, scientists are installing extraordinary numbers of camera traps in the hopes of learning more about an elusive species - woolly monkeys. No one knows for sure how many woolly monkeys are left in the wild....

Top-selling science author Sandra Markle presents the story of whale sharks - the largest fish on the planet. Facing threats from commercial fishing as well as climate change, they were categorized as endangered in 2016. Find out how scientists are working to study and protect these gentle giants of the ocean....

Southern white rhinos are in trouble. For years, a rumor has been spreading that their horns can be used to cure cancer, and poachers have been targeting these gentle creatures....

African penguins waddle around nesting colonies in lower numbers than ever before. Despite South African government efforts to protect the penguin colonies and their ocean fish supply, young penguins still struggle to survive....

In 2007 only 30 Amur leopards remained in the wild. Scientists knew they needed to do more to help these big cats. However, details of the leopards' wild lives in their high-altitude forest home were still a mystery....

Little brown bats do us a big favor. They eat huge numbers of insects! That helps limit the spread of diseases and the damage that insects do to farm crops. But in recent years, large populations of little brown bats have been dying off each winter....

Honeybees are a crucial part of our food chain. As they gather nectar from flowers to make honey, bees also play an important role in pollination. But large numbers are disappearing every year. In this real-life mystery, scientists and beekeepers are working to answer this question....

Panamanian golden frogs aren't just cute, little, and yellow. They're also the national symbol of Panama. But they started to disappear about 15 years ago....

Learn about animals, both domestic and wild, who have become heroes when they came to the rescue of humans....

With their long tusks, narwhals are unique whales that live in the Arctic Ocean. But as climate change causes global temperatures to rise, less and less sea ice is covering the Arctic Ocean each year.

Wolverines are excellent scavengers with a keen sense of smell and the skills to find meals. Learn about the lives of wolverines, including how they search for food, find a mate, and raise their young....