Hi Ego (Eram Reputo ;)) Thanks for your reply.
Yes, I was aware of the magic wand, it has helped me a lot with other pictures. The downside of it is, like in your instance, when you select an area it tends to make a former smooth line more rough. Here I mean the back of the left lion: I did it already with a soft brush, but the magic wand doesn't have a feather parameter, so the edge can be quite rough (at magnification though).
But I will give it another try, maybe with lower tolerance in more separate areas. Th hair on the right was pretty good!.