How do animals decide when to fight and when to walk, fly, slither, or swim away? Most research on animal conflict has focused on the short-term costs of single interactions, but a pair of behavioral ...

The menstrual cycle plays an essential role in human reproduction. However, most other animals don't experience menstruation. So, which other species have periods, and what's the evolutionary point of ...

The energy invested in animal reproduction is as much as 10 times greater than previously estimated when the metabolic load of bearing and caring for offspring is accounted for, according to a new ...

As a career ethologist, I was thrilled when I learned about Dr. Matthew Calarco's new and highly original book titled The Three Ethologies: A Positive Vision for Rebuilding Human-Animal Relationships.