Could it be that these are animals that were hunted, fished, or herded and that there was a convention that used the singular as a sort of generic plural when going after these creatures for sport or ...

The plural of series is simply series. It is an invariant noun, meaning the spelling stays the same for both singular and ...

Of all the grammar concepts we have, "plural" seems to be one of the most straightforward. You got one thing? It's singular. Got more than one thing? It's plural. But alas, language is always less ...

I've just learned a horrifying fact: I've been pluralizing the name "Prius" incorrectly, and you probably have been, too. Did you assume that the regular rules of English plural words applied, such ...