A tiger walks the same worn groove along the edge of its exhibit, like a broken record. A parrot methodically plucks out its ...

I've been studying various aspects of animal behavior, especially in mammals, for many decades and have always felt uneasy about how cultural values have limited our true understanding of the dynamics ...

A new study tracing the evolution of same-sex sexual behavior in mammals, using phylogenetic analyses, suggests these behaviors may have evolved in part to strengthen social bonding and relationships.