Life's size and tempo are intimately linked. The rate of metabolism varies with body mass in
remarkably regular ways that can often be described by a simple power function, where the …

Across the animal kingdom, we see remarkable variation in brain size. This variation has
even increased over evolutionary time. Traditionally, studies aiming to explain brain size …

A longstanding issue in biology is whether the intelligence of animals can be predicted by
absolute or relative brain size. However, progress has been hampered by an insufficient …

Reconstructing the evolution of brain information-processing capacity is paramount for
understanding the rise of complex cognition. Comparative studies of brain evolution typically …

Mammals are the most encephalized vertebrates, with the largest brains relative to body
size. Placental mammals have particularly enlarged brains, with expanded neocortices for …

In comparison to other species, the human brain exhibits one of the highest energy
demands relative to body metabolism. It remains unclear whether this heightened energy …

When vertebrates first conquered the land, they encountered a visual world that was
radically distinct from that of their aquatic ancestors. Fish exploit the strong wavelength …

Human newborns are considered altricial compared with other primates because they are
relatively underdeveloped at birth. However, in a broader comparative context, other …

How does domestication affect the brain? This question has broad relevance. Domesticated
animals play important roles in human society, and substantial recent work has addressed …

The mammalian cranium (skull without lower jaw) is representative of mammalian diversity
and is thus of particular interest to mammalian biologists across disciplines. One widely …