It can be deduced that the challenges that the gray cub will face is the fact that he will come in contact with a new environment that's different from what he's used to.
A challenge simply means an obstacle that one faces. In the story, the cub has been living inside the cave and hadn't stepped out.
Therefore, once he steps out, he will come in contact with a new environment that's different from what he's used to. Also, he will face other animals who are enemies and this will be challenging.
Learn more about challenges on:
https://brainly.com/question/1518893
