Women's capacity for sexual fluidity is at least as interesting a phenomenon from the point of
view of evolutionary biology and behavioral endocrinology as exclusively homosexual …

Variation in spatial complexity and foraging requirements between habitats can impose
different cognitive demands on animals that may influence brain size. However, the …

Red Junglefowl (Gallus gallus) were selected for divergent levels of fear of humans during
eight generations, causing the selection lines to differ in fear levels as well as in the …

Brain size reduction is a common trait in domesticated species when compared to wild
conspecifics. This reduction can happen through changes in individual brain regions as a …

Size changes in brain and brain regions along altitudinal gradients provide insight into the
trade‐off between energetic expenditure and cognitive capacity. We investigated the brain …

Aim Ant communities are believed to be structured by competition, with dominant species
competitively excluding subordinates (the dominance–impoverishment rule). However, a …

The cerebellum has a highly conserved internal circuitry, but varies greatly in size and
morphology within and across species. Despite this variation, the underlying volumetric …

The evolution of cognition is one of the most enigmatic topics within biology. In particular,
which exact (socio-) ecological forces shape the evolution of cognition remains unclear …

The laboratory rat, the domestic version of the wild Norway rat (Rattus norvegicus), is an
important model organism in scientific research. Like other domestic mammals, laboratory …

Bees, including bumblebees, are highly valued for the pollination services they provide to
natural ecosystems and agricultural crops. However, many bee species are facing declines …