130 different types of monkey(s)


Senior Member
Chinese - China
There are more than 130 different types of monkey in the world.

(Kid’s Box 3, CUP)

I wonder if the ‘monkey’ should be ‘monkeys’, or if both ‘monkey’ and ‘monkeys’ are correct.

Many thanks in advance.
  • dojibear

    Senior Member
    English - Northeast US
    Both are correct. I prefer "monkey", but I checked by creating an Ngram (which looks for all uses of a phrase, in published books). I looked for "types" and "kinds" of "monkey/monkeys": 4 combinations. The graph showed that all 4 are used, though the amount each is used is a little different in American English books and British English books:

    Google Ngram Viewer

    Google Ngram Viewer
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