In a new study from the Wisconsin National Primate Research Center (WNPRC) at the University of Wisconsin-Madison, researchers found that marmoset dads that get a whiff of their own babies experience decreased testosterone.
"We were a little surprised to see testosterone alter like that," says Toni Ziegler, a staff scientist at the WNPRC and the senior author of a study published Sept. 2 in the journal Biology Letters. [...] "These moderations may allow him to be more tolerant toward his infants while facing external challenges that might distract him from focusing on his infant and family needs."
— From Baby's smell tamps down dad's testosterone levels at Physorg.
