Monkey Day is celebrated annually on December 14th and is a day to celebrate all things simian! Founded in 2000 by Casey Sorrow, this fun holiday encourages people to appreciate monkeys and other non-human primates while raising awareness about their conservation. Monkeys are incredibly intelligent, social creatures found in tropical and subtropical regions around the world. From playful capuchins to acrobatic gibbons, these amazing animals share about 93% of their DNA with humans! Celebrate Monkey Day by learning about different monkey species, watching nature documentaries, supporting primate conservation efforts, or simply coloring these adorable monkey pages with your kids! Date: December 14, 2026.