A new study reports genetic variations in sensitivity to oxytocin allows dogs to be more sociable and seek out contact with their owners.
Researchers identify a group of neurons that are activated by oxytocin in an area of the female brain, but which are not present in the same area of a male mouse brain. Altered expression of these neurons may result in postpartum depression.
Researchers discovered people with a specific variant of the oxytocin receptor gene OXTR follow more people on Instagram. However, there no evidence was found to suggest gene-environment interactions influence online sociability.