Looking at babies and toddlers

When I look at a baby or toddler, I feel something happen in me.  It is usually a joyous moment.  It is so strong and so reliable, I wondered if what I feel is a common experience.  I looked up:

“is there a human reflex that is felt when an adult looks at a baby or toddler?"  Here is a link to what I found: t.ly/1Soiz

I guess what I feel is an innate nurturing response.  I really like the way babies stare at a face as though they are hypnotized.