Why is this kind of thing wrong? Wanting to see things like this is sinful curiosity. There is no need to see it; it intrudes on a person's privacy (would you want to be seen being attacked by a wild animal?); and seeing it tends to bring out debased feelings and urges. Of course, our entire culture is seized by sinful curiosity. Of this, we should all repent and attend, rather, to the things that matter most.
Finally, brothers and sisters, whatever is true, whatever is noble, whatever is right, whatever is pure, whatever is lovely, whatever is admirable—if anything is excellent or praiseworthy—think about such things--Philippians 4:8.