Happiness is contagious and Pharrell Williams will prove it you. Grammy winner and "Happy" singer Williams teamed up with the United Nations Foundation to celebrate the International Day of Happiness on March 20 with his viral hit song.Every hour, as each time zone reached noon, www.24hoursofhappiness.com released some of the best video submissions of Williams' global hit about happiness - "Happy".He also encouraged fans to post videos of "dancing, singing or just being happy" while listening to his hit number from"Happy" people across the globe shared their videos, and we found the Indian version too. This feel-good video has men, women, kids and even dogs dancing to Williams' catchy number.

Watch the video, and get ready to "clap along if you know what happiness is to you..."