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 ...

Animals reproduce in a variety of fascinating ways. Some species, including humans and many other mammals, give birth to live ...

For the first time since 1961, researchers have rediscovered the elusive Attenborough’s long-beaked echidna in the remote rainforests of Indonesia. An expedition crew led by Oxford University ...

An expedition through an unpredictable, perilous mountain range in Indonesia’s province of Papua led to the rediscovery of a critically endangered egg-laying mammal that hasn’t been seen for more than ...

Biologists have confirmed the existence of a 200-million-year-old species of egg-laying mammal that has been assumed to be extinct. Suspected footage of Zaglossus attenboroughi -- the long-beaked ...

Attenborough’s long-beaked echidna, which was thought to be extinct, has stunned scientists after being filmed in a tropical forest in Indonesia for the first time. The egg-laying mammal, named after ...

Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. Australia’s ...

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

CNN — Australia's echidna has developed a curious way to cool off — blowing bubbles out of its beaklike snout. The short-beaked echidna is common across Australia, Tasmania and New Guinea and along ...