It’s something most kids learn in grade school science classes: all mammals produce milk. But why do mammals breastfeed, anyway? Researchers are slowly piecing together the story of lactation ...

Marine experts say the mammal’s backstory may be even stranger. Its harness appeared “specially made,” with “mounts for GoPro cameras on each side of it,” said Jorgen Ree Wiig ...

They may weigh less than a penny or more than a dozen school buses. From humans to whales to bats, the placental mammals—so named for the placenta that nourishes the fetus during development ...

The creature that gave rise to all the placental mammals - a huge group that includes whales, elephants, dogs, bats and us - has at last been pinpointed. An international effort mapped out ...

The roots of the mammalian family tree have long been shrouded in mystery – when did the placental mammals go their separate ways? Now, researchers led by Dr James Tarver at the University of Bristol ...

Figure 1: Phylogenetic relationships among 64 placental mammals and two marsupials based on analysis of 9,779 bp from 15 nuclear and three mtDNA genes. We also performed phylogenetic analyses ...