This instalment is the first of several to concentrate on mammals. The platypus and the echidna are the only mammals that lay eggs (in much the same manner of reptiles), and it is from such animals that others in the group evolved. Since mammals have warm blood and most have dense fur, they can hunt at night when temperatures drop. It is for this reason that they became more successful than their reptile ancestors, who needed to heat themselves externally. Much of the programme is devoted to marsupials (whose young are partially formed at birth) of which fossils have been found in the Americas dating back 60 million years.
Playful pets, fearsome fighters or deadly hunters? Millions of us have cats in our homes, yet we know very little about them. In this series, Liz Bonnin joins forces with some of the world's top cat experts to conduct a groundbreaking scientific study. With GPS trackers and cat cameras, we follow 100 cats in three very different environments to find out what they get up to when they leave the cat flap. In the first programme we discover how our cats see, hear and smell the world with the senses of their wild ancestors, and why this could be making life difficult for them in the modern world.
Three hundred and seventy miles off the coast of Mexico in the eastern Pacific, the waters surrounding Socorro Island are home to some of the world's largest marine life. Take a deep dive through surging currents and majestic coral reefs with whale sharks, giant manta rays, and more.
Peregrine falcons are slowly rebounding from the edge of extinction, while snapping turtles face different life-threatening challenges. Learn about conservation efforts in Ontario, Canada to help give these threatened species a boost while they fight back.
During summer, the Atlantic coast of the northeastern United States attracts huge amounts of fish and wildlife. Particularly interesting are the basking sharks, the world’s second-largest fish, and the leatherback sea turtles, which weigh one ton and are the world’s largest reptile.