This lion looks to me like he is going somewhere with quite a purposeful stride, like a parent moving to discipline a child, or a manager heading in to sort out trouble at the office. . . or (yes!) a male lion following a female who has flirtatiously summoned him for a bit of private dancing.
I was actually surprised when the ranger, seeing the female first, said, "Oh look. She's flirting! Look for the male." Sure enough, there he was, rising from his drowsy midday nap in the shade of a tree. . .