Most of us just melt when we see cute babies, cute kittens and puppies, and even cute adult animals. It's perfectly normal, and totally human. Oh yeah, also cute toys, animation, and advertising. It's just wired into us. In this TED-Ed lesson, we learn how that happened, how "cute" is defined, and why it affects us so much. It also appears that some species have even leveraged the human attraction to the traits we consider cute, and made themselves cuter for their own purposes. We even get an explanation for "cute aggression," that weird impulse to squeeze or bite something that strikes us as really cute. That's not universal. I always want to touch something I find cute, but squeezing or biting would never occur to me.
If you ever feel the need to see something really cute, check out the site Supa Fluffy. It will make you feel happier the rest of the day.