Survival in high-altitude regions requires mastering live birth rather than traditional egg laying. The cloaca serves as a single exit point, causing unique complications during birth membrane ...

Chameleons are among nature’s most fascinating reptiles, admired for their colour-changing abilities, swivelling eyes, and remarkable camouflage. But beyond these iconic traits lies another intriguing ...

Q. When we studied high school biology, our teacher said more than 99 percent of animals lay eggs and only a few give live birth. That percentage seems too high. Humans, dogs, cats and cows are ...

Researchers describe a species of chameleon from Madagascar that has a life cycle we associate with insects: the entire population is replaced each year, after laying eggs that won't hatch for eight ...

Eggs helped animals conquer land—but most mammals stopped laying them. Why is that? Why do most animals lay eggs, while humans and most mammals give birth to live young? In this episode of Big Ideas ...

Chameleons are very fascinating creatures. Their most famous feature is their ability to change colors and blend in almost anywhere. A lesser-known fact is the different ways they give birth.