National Day

National Monkey Day

Celebrated on 12/14/2026

Quick Fact

National Monkey Day is celebrated on December 14th each year, embracing the playful and intelligent nature of our primate cousins. It was started in 2000 by artist Casey Sorrow as a whimsical holiday to bring joy and awareness to monkeys worldwide.

Origins and Establishment of National Monkey Day

National Monkey Day was created in 2000 by Michigan State University art student Casey Sorrow. While doodling with a friend, Sorrow jokingly marked December 14th as "Monkey Day" on a calendar, and the idea quickly spread among their circle. The holiday was initially a lighthearted celebration among friends, but it gained traction online and through Sorrow's artwork. By 2001, it had become an annual event, with Sorrow and others promoting it through websites and social media, often encouraging people to dress as monkeys or donate to primate conservation.

Evolution and Modern Commemoration

Over the years, National Monkey Day has evolved from a small joke into a global observance. It is now recognized by various organizations, including zoos, wildlife groups, and educational institutions. Celebrations often include fundraisers for primate sanctuaries, educational events about monkey species, and social media campaigns using hashtags like #NationalMonkeyDay. The day also serves as a platform to highlight threats to monkeys, such as habitat loss and illegal pet trade, promoting conservation efforts.

Facts & General Observations

  • There are over 260 species of monkeys, divided into Old World and New World categories, with the smallest being the pygmy marmoset (weighing about 100 grams) and the largest being the mandrill (up to 35 kg).
  • Monkeys are highly intelligent and use tools; for example, capuchins have been observed using rocks to crack nuts.
  • National Monkey Day has inspired events like "Monkey Parades" and themed parties, with participants often dressing as monkeys and sharing banana-based treats.

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