Not the same lion. The one chasing the zebra is a strong fit one and you can see that after the kick it still manages to grab the zebra, then cut to an old limping one and tell a story: "she's too weak...bla, bla..". I betcha the average lion gets kicked like that twice a day on weekdays.
you forget the fact, that the digestion is a lot different from a horse to a lion . Horses have microbes in their appendix which produce the proteins they can't produche themselves. Cows have those mikrobes in their stomach. in difference to horses, cows digest these microbes so they get those improtant proteins better. And thats why these animals are able to only eat plant material
