Whether you're having a happy or a not-so-happy day, we hope we can enhance/rectify things with this round-up.
From singing babies to drumming grandmas - via lip syncs, flash mobs, dogs and, yes, cats - here are 20 feelgood YouTube classics that may well restore your faith in humanity... or at least put a smile on your face.
Enjoy (quite literally)!
SEE ALSO: 32 Happy Dogs To Celebrate Happiness Day