Llama Day celebrates llamas for their friendly demeanor and fluffy appearance, llamas make great pack animals and even therapy animals due to their calming presence. Llama

Monkey Day celebrates monkeys and "all things simian", including other non-human primates such as apes, tarsiers, and lemurs. Monkey Day is celebrated worldwide and often also known as World Monkey […]

The name speaks for itself.  However, it's origin is a bit sketchy. Zoos I've written about in 2024.