International Monkey Day is an unofficial international holiday celebrated on December 14 and celebrates monkeys including other non-human primates such as great apes, tarsiers and lemurs. Monkey Day is particularly popular among animal rights activists, environmental activists, visual artists and art institutions.
Monkey Day is a holiday celebrated in countries such as the United States, Canada, Italy, India, Pakistan, Estonia, the United Kingdom, Colombia, Thailand, and Turkey. It was created and popularized by artists Casey Sorrow and Eric Millikin in 2000. The holiday is a day to learn about and celebrate monkeys, and often includes fundraising for primate-related causes. Monkey Day is also celebrated with costume parties and activities such as competitions for the best monkey costume or the longest time spent acting like a monkey. Other activities include spending the day at the zoo. Monkey Day has gained recognition from organizations such as Greenpeace, National Geographic, and the Smithsonian Institution.