Over 130 mammal species can delay embryonic development, giving their offspring the best possible chance of survival in ideal ...

Nature is full of evolutionary selflessness. From deep-sea octopuses to certain marsupials, there are animals and insects that reproduce and then die, as their lives can be cut short because they ...

Reptiles exhibit remarkable reproductive diversity, with many species giving birth to live young rather than laying eggs.

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