Hello everybody, I am a bit confused about the wording of the question.
In the example, a supertype of Bird and Dog are created, called Animal. However, I am unsure of how Animal is made the supertype of Bird and Dog. It seems like it is similar in the chain as Bird and Dog. Where is it declared explicitly that Bird and Dog are subtypes, or where does is state that Animal is the supertype?
Thank you!
EDIT Just realized that this is covered in the next two lessons.