They acquired certain traits that would characterize mammals ever afterward: limbs positioned under the body, an enlarged brain, a more complex physiology, milk-producing glands, and a diverse ...

Imagine a world where furry mammals scuttle under the feet of gigantic dinosaurs, not yet destined to rule the Earth. It’s a ...

And so on. Despite these differences, all mammals share four traits that are shown in the diagram below: hair, mammary glands, a hinged jaw, and three tiny middle ear bones. Most have specialized ...

Amniotes split into the sauropsids (leading to birds and reptiles) and synapsids (leading to mammal-like reptiles). These small early mammals developed hair, homeothermy, and lactation (red lines).

What features distinguish primates from other mammals? This question is of central importance to Biological Anthropology - the study of primate adaptation and evolution. In addition to having ...

Small mammals like mice are dependent on trees and ... They gave them personality tests that included traits like a tendency ...

Small fossils show mammals moved to the ground before the dinosaurs vanished. New plants changed habitats, giving better food and shelter.

This video could be used to introduce a discussion about animal groups. Pupils could list the characteristics of mammals and identify animals as mammals based on these characteristics. They could ...

Could aquatic mammals, such as whales, orcas, and bottlenose dolphins, ever evolve to live on land again? It seems the ...

In the traditional view of how evolution works, natural selection acts on an individual organism's traits. For instance, mammals with more friends typically live longer lives and have more offspring.

This pattern suggests that in these mammals, natural selection may favor cognitive abilities and complex social behaviors rather than traits driven by sexual competition. Sexual conflict ...

From the top of Shifting Sands dune in the Serengeti Plain of Africa a million mammals are in motion. Wildebeests. Zebras. Gazelles. The plain is black with them. It is wildebeest calving season ...