Pronking, also known as stotting or pronging, is a behavior displayed by some antelopes species, especially springbok. The springbok will leap very high in the air, lifting all four feet off the ground at the same time. It is done to alert would be predators that the pronking individual is healthier than the others and perhaps not worth the effort to try and catch. So I guess the springbok in this photo is saying something like, “hey lion, don’t try and eat me, go after one of my weaker friends here who can’t jump as high. Just trying to do you a solid and save you some energy.”