Researchers suggest that ground-based mammals fared better than their arboreal relatives during the end-Cretaceous extinction ...

Six of ten species are found in Papua New Guinea ... Female tree kangaroos give birth to one offspring after a gestation period of approximately 44 days. After birth, the fetus-like young ...

It’s a great example of how even similar species can evolve different strategies to help their offspring thrive. The Gulf pipefish takes male pregnancy a step closer to how it works in mammals.

In the animal kingdom, all is fair, and survival is the only thing that matters. Some species even eat their own young for ...

Marine mammals—a group of animals that are ecologically tied ... This is partly because an entire generation (at least 53 juveniles), many of whom would have contributed offspring to the population ...