Questions & Answers about Otto gatti di Marco sono neri.
Does the number otto change its ending depending on what we are counting?
How does Italian show possession here, like "Marco's" in English?
Italian doesn't have an apostrophe-s ('s) to show ownership. Instead, it uses the preposition di (of). So, "Marco's cats" is built as gatti di Marco (literally: cats of Marco).
Why does the sentence use neri instead of nero?
Adjectives in Italian have to match the noun they describe. Since gatti (cats) is a masculine plural word, the adjective for black must also take the masculine plural ending -i, becoming neri.
Why isn't there a word for "the" before otto?