Current hypotheses that use visually guided reaching and grasping to explain orbital
convergence, visual specialization, and brain expansion in primates are open to question …

While some primate species attempt to avoid predators by fleeing, hiding or producing alarm
calls, others actually approach, harass and sometimes attack potential threats, a behavior …

The global prominence of snakes in religion, myth, and folklore underscores our deep
connection to them—but why, when few of us have firsthand experience? The answer, Isbell …

The removal, or absence, of predatory species could be a contributing proximate factor to
the rise of primate cathemerality. But predators themselves can also be cathemeral, so …

Relationships between primates and snakes are of widespread interest from
anthropological, psychological, and evolutionary perspectives, but surprisingly, little is …

Studies on primate vocalisation have revealed different types of alarm call systems ranging
from graded signals based on response urgency to functionally referential alarm calls that …

Limited dispersal may favor the evolution of helping behaviors between relatives as it
increases their relatedness, and it may inhibit such evolution as it increases local …

Abstract Aim In 1833, CL Gloger observed that bird populations living in warm and wet
habitats were darker than those found in dry, cool areas. However, this hypothesis has …

For most animal species, predation exerts a fundamental selective pressure on
morphological traits and behavior patterns and, ultimately, the ecological characteristics of a …

We studied patterns of genetic relatedness and paternity in moustached tamarins, small
Neotropical primates living in groups of 1–4 adult males and 1–4 adult females. Generally …