All animals and plants have a life cycle. The echidna and platypus are the only mammals that give birth to eggs, not live young. The Virginia opossum only carries its young for 12 days, ...

The rest of P. bathmodon’s life trajectory, however, was markedly different from modern mammals. This species weaned and reached adulthood faster than expected for an animal of its size.

Mammals may struggle to attain long life thanks to dinosaurs. According to University of Birmingham microbiologist João Pedro de Magalhães, the age of dinosaur dominance completely shifted the ...

The world’s oldest mammal has been identified using fossil dental records – predating the previously confirmed earliest mammal by about 20 million years – in a new discovery hailed as ...