When to capitalize "monkeys":
* As a proper noun: If "monkeys" refers to a specific group or species with a name, like "the Capuchin Monkeys" or "the Barbary Apes," then you would capitalize it.
* At the beginning of a sentence: Like any other word, "monkeys" should be capitalized if it starts a sentence.
When to lowercase "monkeys":
* As a common noun: When "monkeys" refers to the general animal group, it should be lowercase. For example: "Monkeys are primates."
Examples:
* Capitalized: "The Monkeys are playful animals." (Referring to a specific group)
* Lowercase: "Monkeys swing through the trees." (General reference)
In short:
If you're talking about monkeys in general, use lowercase. If you're referring to a specific group or species with a name, capitalize it.