The reason why we want to squeeze cute things is because when we're feeling overwhelmed by positive emotions we use a little bit of aggression to helps us balance out that high.
101 Dalmatians, Peter Pan, Lady and the Tramp, and Mulan are the only Disney cartoons where both parents are present and don't die throughout the movie.
You're programmed to love the music you listened to in high school the most. The music we like gives us a hit of dopamine and other feel-good chemicals, and that's even stronger when we're young because our brains are developing.