Could someone explain to me what is paedomorphic anatomical features? I researched but couldn't understand exactly what it is, especially in this context.

Could someone explain to me how this connection can occur? I found it very interesting.

Oxytocin is a peptide hormone and neuropeptide. It is very importante in social bonding, sexual reproduction, childbirth, and the period after childbirth.

I read the definition that the colleague put bellow and I was still confused so I went after examples based on other animals and found an interesting one that made me understand better. An example is the Mexican axolotl opposite that when it reaches adulthood it retains the gills of feathers that animals of related species lose when they are young.