Seals give birth only when conditions are right. After mating, a female seal can delay implantation of the embryo in the ...

Mammals keep evolving into anteaters, eating only ants and termites, at least 12 times since the age the dinosaurs.

Long after an animal’s soft tissues have vanished, its skull still carries a blueprint of how it sensed the world. For ...

A biologist explains the surprising evolutionary math behind how the blue whale became the largest animal that has ever lived ...

Figure 1: The nine locality intervals and number of localities (in parenthesis) analysed. Figure 2: Increase in hypsodonty is limited to common groups (present at over 25 per cent of localities within ...

A new book dives into the evolutionary history of mammals. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. Shortly after dinosaurs got their ...

Researchers reveal new insights into the complex evolutionary history behind the distinctive upright posture of modern placental and marsupial mammals, showing the transition was surprisingly complex ...

The fossil remains of several small mammals discovered in tightly packed clusters in western Montana provide the earliest evidence of social behavior in mammals, according to a new study co-authored ...

The range is transcontinental, and from Alaska to southern Mexico, except for the southeastern U.S. In the Adirondacks the deer mouse is wide spread, occurring in all terrestrial habitats at all ...

Luciana Gallo of BIOMAR-CONICET and Marcela Uhart of UC Davis sample for highly pathogenic H5N1 among cormorants (by shore) and terns (in greenery) at Punta Leon in Argentina in November 2023. The ...

Recently announced findings, published in the journal Science by Maureen O’Leary and colleagues, represent an important step in understanding the early evolution of placental mammals, and sheds light ...