Are there any cases that a minor triad can be a dominant chord?

Question

Okay so that is quite a weird question, but are there any possibilities? And in a natural minor key does a minor v count as a dominant?

Answer 1

No, a minor triad cannot be a dominant chord.

Dominant chords are used to establish the tonal connection to the tonic of the key which is why the minor v chord in a minor key must use accidentals to be a dominant chord. There are minor v to major I cadences but those are modal cadences and do not make use of a dominant triad.