@Shock & Aweirst of all, nice Bultungin. The fur coloring is really working out well!
The picture taking is done on a little pillar of black primed wood in front of a black cloth. Posing the model on a small pillar blurs the background some more. Afterwards I slightly increase the highlight brightness, add a vignette and increase the shadow values. This leads to a consistent black background (well, sort of. Still room for improvement)
@Gheist to be honest, the only thing keeping me from doing tutorials is the lack of a good camera being able to capture what I am doing in video. And with a 3d printer setup still on the horizon the next hobby investment is already planned. But someday, promised!