This may seem like nitpicking but you'll see natural behavior every time you visit a safari park, even if all the lions do is sleep, for that's what lions do in the wild as well, not just in zoos, 15-20 hours a day for that matter.
Probably fighting a young but castrated male here due to its size.
I visit here quite a lot, if its sunny or a ray of sun on a winters day, you can bet they will be snoozing in it, however, a bit of chill in the air and a breeeze of wind and they are often up to all sorts of antics from chasing, squabbeling to climbing trees and sometimes even lined up watching the 'prey' animals in the field opposite with the 'i'm hungry' look on thier faces
