Looking at the pictures these lynx were not wild. It is impossible to get a photo like this of two lynx close together, watching the photographer, during the day.
In fact, there was a photo contest (wildlife) years ago and the winner was a picture of a lynx in the sun on a rock. Well, a few weeks earlier I was in a German Wildgehege (small animal park with local species living in large enclosures) and I made a picture of a lynx on a rock in a field. Exactly the same rock as on the winning photo. It was quite easy to get rid of the fence with a tele at 20 meter. I contacted the organization that the winning photo was a fake, but they didn't care. This has nothing to do with wildlife photography. For me zoo pictures are fun because you have a chance to work with rare animals without disturbing them in nature. Of course, they are in captivity, for me the educational aspect is very important but that's a different discussion.
Wild lynx are almost invisible, if you are persistent you might find some tracks. We have a few lynx in the south-east of the Netherlands, there is a population nearby by in the German Eifel (low mountains, Mittelgebirge).
Sheep attacks are rare, only a few percent of the diet. Lynx are not killing sheep due to shortages of alternative prey or in response to an increased need for food when rearing young.
Only a few individual lynx seem to attack sheep. This is more or less the same as with our wolves and makes it possible to target the culprits. In many cases the individuals don't have to be killed, it is a matter of conditioning. This is Western-Europe, small nature reserves and large predators are extremely rare, we try to 'help' them first.
