I was just wondering, is it always necessary to articulate the object? for example is it right to say: "Musen äter ost." or is it gramatically incorrect? even if it gives the sentence a slightly different meaning, as if you would like to tell which animal eats what food (mouse eats cheese, wolf eats meat and so on)
Unless translating certain idiomatic expressions, definites translate to definites, and indefinites to indefinites. While "Musen äter ost" is a grammatically correct sentence, it's not correct here.
It may be classic, but it's not actually good for mice to eat cheese lol. More like, Musen äter inte osten.
It's from "The Farmer in the Dell". The last two line are "The mouse eats the cheese" and finally "The cheese stands alone". It's an old children's song and game. :)