Playing chases is a pretty regular occurrence on the Cheetah exhibit at present with the four cubs full of energy, especially in the morning.
It is like a big game they will start off all laying quietly together in the grass and then suddenly one of the cubs will take off away from the others and will run around the exhibit until they are caught and wrestled to the ground.
The four cubs particularly like the obstacles in the exhibit climbing up and over the tunnel and logs.
All this play activity is great for their social interaction skills as well as developing their hunting techniques. They are learning from each other and you often see them try and put their skills to the test stalking birds that land in their exhibit and then chasing them till they fly away.