"Do you know the cat?"
Translation:Kender du katten?
try translating at vide in your head by 'know what ... is'. It's stated before and elsewhere, that the english 'know' maps to two kinds of connection. The specialist, to know one's address, or some cat, is at kende; the generalist, usually accompanied by a preposition, to know which of the cats is being talked about, or to know the size of a building, is at vide.