Lion in the Roar (1956)

In the African jungle, King Louis, is telling his son, the future King Louie, that someday he will inherit the throne of the King of the Jungle, and he must act accordingly. But young Louie's posturing and combined with his weak roar and small stature fails to impress the denizens of the jungle, and they all laugh at him. A huge gorilla appears and they quit laughing and scurry away while the gorilla attacks Louie's father. Will Louie save the day?