Java programmers can use class hierarchies for the purposes of inheritance. For example, given a Tree class, we could define Conifer and Deciduous sub classes that inherit from the parent Tree class as you can see here:
Develop a similar class hierarchy for Animals.
You can have whatever subclasses you think would be useful.
Your hierarchy should have at least three levels (the top class, Animals, counts as the first level).
Include variables and methods (at least one of each) for each class you design, as in the above example.