like most advanced mammals, lions need to be taught in order to know how to do things. that doesn't mean it's a good idea to have a pet lion - you're too easy of a meal if you're standing there naively patting it's head, with your gut pressed up against it's face. there's no skill required in munching you. but, young lions that are not taught to hunt will not know how to hunt until they are taught or they figure it out through trial and error.

taking an elephant down, in particular, is something that requires a lot of teamwork. that means it requires a lot of practice, which means it requires a lot of training. it's a task for seasoned, professional lions only.

that's a lot of lions in one place, and it's a little curious as to how they all got there. but it looks to me like the lions are also quite young - a year old, maybe two.

that's the explanation of what you're seeing - it's baby lions v baby elephant.