Fatherhood Messes Monkey Minds
Researchers from Princeton University have discovered significant changes in the brain structure of male Common Marmosets on becoming a father.
Marmosets are a primate species where the fathers stay involved with their offspring.
The changes in brain structure are triggered by hormonal changes also found in human males with a pregnant partner.
Some of these changes reversed once the young became independent, but could be observed again if a new one was born.