The puppy has a duty to fulfill while he hangs out with the cheetah. He should help him to be more confident and calm since cheetahs by nature are edgy. This is not the first time that a dog assist to help e cheetah. Since the ’80s the Anatolian Shepherd is used to guard livestock from cheetahs.
What happens is that, when you place a puppy with a chub very early on, they grow up assuming he is their brother/sister.
Since is important for the cheetahs to preserve their natural confidence they have found that dogs can do just that, since is impossible for humans to assist in that direction in any way.
Just look at them together. So sweet!