Superb starlings (Lamprotornis superbus) demonstrate ‘reciprocity,’ helping each other with the expectation that the favor will eventually be returned,...
In new lab experiments, scientists at the University of Southern California showed that when mice encountered a familiar social partner in a state of unconsciousness...
The newly-identified species — the earliest and most primitive member of the saber-toothed cat genus Amphimachairodus — had craniodental adaptations...
New research supports an influential ecological hypothesis on social behavior first proposed 58 years ago.
Village weavers (Ploceus cucullatus) and their...
A team of researchers has reconstructed and analyzed the external and internal bone morphology of a deformed hip bone from Smilodon fatalis, one of the...
Giraffes (Giraffa camelopardalis) exhibit many of the features typical of mammals with complex cooperative social systems and matrilineal societies, according...
