Build a Multi-Level Class Hierarchy with Shared Behavior

You will implement a small multi-level object-oriented hierarchy in Python. The base class is Creature, extended by Animal, which is extended by Mammal. Dog and Cat should inherit from Mammal and a mixin PetBehavior that provides shared pet-specific behavior. Implement constructors and methods so that: - Creature stores name and age and provides a basic info() string. - Animal adds a species attribute and a describe() method that uses name, species, and age. - Mammal sets a class attribute indicating warm-blooded animals and provides a move() method. - PetBehavior is a mixin that provides a play() method using the instance's name. - Dog and Cat set their species appropriately, implement speak() returning 'woof' or 'meow', and override describe() to include what the pet says (use super() in your override). Also provide factory functions create_dog(name, age) and create_cat(name, age) that return instances, and implement collect_sounds(pets) which accepts an iterable of pet instances and returns a list of the results of calling speak() on each pet. Your implementations should demonstrate multi-level inheritance, method overriding, use of super(), and shared behavior via the mixin.

Create a class hierarchy (Creature -> Animal -> Mammal -> Dog/Cat) plus a PetBehavior mixin. Implement methods using super(), override behavior in subclasses, and write a helper that uses polymorphism to collect sounds.

Use class inheritance for the hierarchy. Use super() when overriding describe() in Dog and Cat. PetBehavior should be a separate class used as a mixin. collect_sounds must work for any iterable of objects that implement speak().